Recent Publications

【2021年】

・Reduction Annealing Effects on the Crystal Structure of T'-type La_1.8Eu_0.2CuO_4+α-δ
　Journal of the Physical Society of Japan, 90 (2021) 105002(1-2)
　M. Fujita, T. Taniguchi, T. Wang, S. Torii, T. Kamiyama, K. Ohashi, T. Kawamata, T. Takamatsu, T. Adachi, M. Kato and Y. Koike.

・Effect of the fluorine substitution for oxygen in the heavily Pb-doped Bi-2212 phase of (Bi,Pb)₂(Sr,Ba)₂CaCu₂O₈
　Journal of Physics: Conference Series 1975 (2021) 012007(1-7)
　Proceedings of the 33th International Symposium on Superconductivity (ISS2020)
　R. ito, T. Kawamata, T. Noji and M. Kato.

・Effect of co-substitution on superconductivity in (Y,Ca)(Ba,Sr)₂Cu₄O₈ prepared by the molten KOH method
　Journal of Physics: Conference Series 1975 (2021) 012006(1-5)
　Proceedings of the 33th International Symposium on Superconductivity (ISS2020)
　A. Imigi, T. Kawamata, T. Noji and M. Kato.

・New Lithium and Ethylenediamine Co-Intercalated Superconductors Li_x(C₂H₈N₂)_yMoTe₂
　Journal of the Physical Society of Japan, 90 (2021) 044707(1-4)
　M. Ono, T. Noji, K. Sato, T. Kawamata, M. Kato.

・New Lithium- and Ethylenediamine-Intercalated Superconductors Li_x(C₂H₈N₂)_yWTe₂
　Journal of the Physical Society of Japan, 90 (2021) 014706(1-5)
　M. Ono, T. Noji, M. Harada, K. Sato, T. Kawamata, M. Kato.

【2020年】

・Large Thermal Conductivity due to Spins in the Two-Dimensional Spin System LaSrFeO₄
　Journal of the Physical Society of Japan, 89 (2020) 114603(1-6)
　E. Komatsu, T. Kawamata, M. Kato, T. Sasaki, and Y. Koike.

・Synthesis of New Lithium- and Monoamine-Intercalated Superconductors Li_x(C_nH_2n+3N)_yFe_1−zSe (n = 6, 8, 18) with the Dramatically Expanded Interlayer Spacing
　Journal of the Physical Society of Japan, 89 (2020) 115002(1-2)
　C. Sakamoto, T. Noji, K. Sato, T. Kawamata, and M. Kato.

・Synthesis of the Ba-substituted Bi-2212 phase of BiPb(Sr,Ba)₂RECu₂O₈
　Japanese Journal of Applied Physics, 59 (2020) 050902(1-4)
　T. Watanabe, K. Nakagawa, C. Sugimoto, K. Takano, R. Ito, T. Kawamata, T. Noji and M.Kato.

・Superconductivity in the RE-123 phase of Lu_0.5Ca_0.5Ba_1.4Sr_0.6Cu₃O₆ without oxygen in the Cu-O chain
　Physica C, 568 (2020) 1353583(1-5)
　K. Nakagawa, T. Noji, T. Kawamata, M. Kato.

・Electron-Doping Effect on T_c in the Undoped (Ce-Free) Superconductor T'-La_1.8-xEu_0.2Sr_xCuO₄
Studied by the Fluorine Substitution for Oxygen
　Journal of the Physical Society of Japan, 89 (2020) 014701(1-4)
　T. Sunohara, T. Kawamata, K. Shiosaka, T. Takamatsu, T. Noji, M. Kato, and Y. Koike.

・Local structure analysis of BO₆ (B = Fe, Cu) octahedron correlated with the magnetic properties of Cu-doped Ba_0.5Sr_0.5FeO_3-δ
　Bulletin of Materials Science, 43 (2020) 152(1-9)
　F. FITRIANA, M. ZAINURI, M. A. BAQIYA, M. KATO, P. KIDKHUNTHOD and S. SUASMORO.

・Introduction of Na⁺ in Reduced Graphene Oxide Prepared From Coconut Shells and Its Magnetic Properties
　IEEE TRANSACTIONS ON MAGNETICS, 56 (2020) 2700106(1-6)
　D. Ristiani, R. Asih, N. S. Puspitasari, M. A. Baqiya, Risdiana, M. Kato, Y. Koike, S. Yamaguchi, Y. Furukawa, and Darminto.

・Synthesis and Magnetic Characterization of La_2-xSr_xCuO₄ Nanoparticles
　Key Engineering Materials, 855 (2020) 58-63
　M. A. Baqiya, P. E. D. Putra, R. Irfanita, Fitriana, Darminto, T. Kawamata, T. Noji, H. Sato, M. Kato.

・Exploring Soft Magnetism in Amorphous Carbon Synthesized from Biomass
　Key Engineering Materials, 855 (2020) 154-159
　F. Astuti, V. L. Maghfirohtuzzoimah, N. Sari, D. Ristiani, R. Asih, M. A. Baqiya, T. Kawamata, T. Noji, H. Sato, M. Kato, D. P. Sari, I. Watanabe, Darminto.

・Effects of Mn Substitution on Magnetic Properties of ZnO Nanoparticles
　Key Engineering Materials, 855 (2020) 166-171
　R. Asih, R. M. Dhari, M. A. Baqiya, F. Astuti, H. Harsono, C. Saiyasombat, T. Kawamata, T. Noji, H. Sato, M. Kato, I. Watanabe, Darminto.

【2019年】

・Pauli-limit upper critical field of high-temperature superconductor La_1.84Sr_0.16CuO₄
　Scientific Reports, 9 (2019) 16949(1-8)
　D. Nakamura, T. Adachi, K. Omori, Y. Koike and S. Takeyama.

・Thermal conductivity and magnetic phase diagram of CuB₂O₄
　Journal of the Physical Society of Japan, 88 (2019) 114708(1-6)
　T. Kawamata, N. Sugawara, S. M. Haidar, T. Adachi, T. Noji, K. Kudo, N. Kobayashi, Y. Fujii, H. Kikuchi,
　M. Chiba, G. A. Petrakovskii, M. A. Popov, L. N. Bezmaternykh and Y. Koike.

・d-wave superconducting gap observed in protect-annealed electron-doped cuprate superconductors Pr_1.3-xLa_0.7Ce_xCuO₄
　Physical Review B, 100 (2019) 054517(1-5)
　M. Horio, K. Koshiishi, S. Nakata, K. Hagiwara, Y. Ota, K. Okazaki, S. Shin, S. Ideta, K. Tanaka, A. Takahashi, T. Ohgi, T. Adachi, Y. Koike and A. Fujimori.

・Muon-spin relaxation study of the spin correlations in the overdoped regime of electron-doped high-T_c cuprate superconductors
　Physical Review B, 100 (2019) 064514(1-5)
　M. A. Baqiya, T. Adachi, A. Takahashi, T. Konno, T. Ohgi, I. Watanabe and Y. Koike.

・Nature of Carrier Doping in T'-La_1.8-xEu_0.2Sr_xCuO₄ Studied by X-Ray Photoemission and Absorption Spectroscopy
　Journal of the Physical Society of Japan, 88 (2019) 115004(1-2)
　C. Lin, M. Horio, T. Kawamata, S. Saito, K. Koshiishi, S. Sakamoto, Y. Zhang, K. Yamamoto, K. Ikeda,
　Y. Hirata, K. Takubo, H. Wadati, A. Yashi, Y. Takagi, E. Ikenaga, T. Adachi, Y. Koike and A. Fujimori.

・Comparative Study on Magnetism of Reduced Graphene Oxide (rGO) Prepared from Coconut Shells
and the Commercial Product
　Materials Science Forum, 966 (2019) 290-295
　R. Asih, E. B. Yutomo, D. Ristaani, M. A. Baqiya,
　T. Kawamata, M. Kato, I. Watanabe, Y. Koike, Darminto.

・Enhanced Room-Temperature Ferromagnetism in Superconducting Pr_2-xCe_xCuO₄ Nanoparticles
　Materials Science Forum, 966 (2019) 263-268
　M. A. Baqiya, P. E. D. Putra, R. Irfanita, D. Darminto,
　T. Kawamata, T. Noji, H. Sato, M. Kato, Y. Koike.

・Ce-Doping and Reduction Annealing Effects on Magnetic Properties of Pr_2-xCe_xCuO₄ Nanoparticles
　Journal of Superconductivity and Novel Magnetism, 32 (2019) 2165-2174
　M. A. Baqiya, P. E. D. Putra, B. Triono, R. Irfanita, S. Suasmoro, D. Darminto,
　T. Kawamata, T. Noji, H. Sato, M. Kato, Y. Koike.

・Thermal Conductivity due to Spins in the Two-Dimensional Spin System Ba₂Cu₃O₄Cl₂
　Journal of the Physical Society of Japan, 88 (2019) 064708(1-5)
　M. Ohno, T. Kawamata, M. Akoshima and Y. Koike.

・Enhancement of the superconducting transition temperature by the Sr-substitution for Ba in (Yb,Ca)Ba₂Cu₃O₆
　Physica C, 564 (2019) 38-41
　K. Nakagawa, Y. Sumino, K. Kim, T. Noji, T. Kawamata, Y. Koike, M. Kato.

・Partial substitution of Ba for Sr in the cuprate superconductor Bi₂(Sr,La)₂CuO_6+δ
　Physica C 561 (2019) 49-51
　T. Luo, M. Kato, T. Yoshida, T. Noji, Y. Koike.

・Band structure of overdoped cuprate superconductors: density functional theory matching experiments
　Phys. Rev. B 99 (2019) 224509(1-8)
　K. P. Kramer, M. Horio, S. S. Tsirkin, Y. Sassa, K. Hauser, C. E. Matt, D. Sutter, A. Chikina,
　N. B. M. Schroter, J. A. Krieger, T. Schmitt, V. N. Strocov, N. C. Plumb, M. Shi, S. Pyon,
　T. Takayama, H. Takagi, T. Adachi, T. Ohgi, T. Kawamata, Y. Koike, T. Kondo, O. J. Lipscombe,
　S. M. Hayden, M. Ishikado, H. Eisaki, T. Neupert and J. Chang.

・Fabrication of high-temperature quasi-two-dimensional superconductors at the interface
　of a ferroelectric Ba_0.8Sr_0.2TiO₃ film and an insulating parent compound of La₂CuO₄
　Phys. Rev. Lett. 122 (2019) 237001(1-5)
　D. P. Pavlov, R. R. Zagidullin, V. M. Mukhortov, V. V. Kabanov, T. Adachi, T. Kawamata, Y. Koike and R. F. Mamin

・Fluctuations of various order parameters in cuprate and Fe-based superconductors as revealed by microwave absorption measurements
　Magn. Reson. Solids. Electron. J. 21 (2019) 19305(1-9)
　I. I. Gimazov, Yu. I. Talanov, T. Adachi, T. Noji, Y. Koike, K. Omori, Y. Tanabe, D. Chareev and A. Vasiliev

【2018年】

・Electrochemical Performance of Layered FeSe for Sodium Ion Batteries Using Ether-Based Solvents
　Journal of the Electrochemical Society, 165 (2018) A3582
　T. Kajita, T. Noji, Y. Imai, T. Kawamata, M. Kato, Y. Koike.

・Enhanced Magnetism by Temperature Induced Defects in Reduced Graphene Oxide Prepared From Coconut Shells
　IEEE TRANSACTION ON MAGNETICS, 54 (2018) 1600105
　Darminto, R. Asih, Kurniasari, M. A. Baqiya, S. Mustofa, Suasmoro, T. Kawamata, M. Kato, I. Watanabe, and Y. Koike.

・New Intercalation Superconductors A_x(C₂H₈N₂)_yMoSe₂ (A=Ca, Sr, Ba) Synthesized by Solvothermal Method
　Journal of the Physical Society of Japan, 87 (2018) 113702(1-4)
　K. Sato, T. Noji, S. Ueno, T. Kawamata, M. Kato and Y. Koike.

・Microwave Absorption by Charge Density Waves in La_2-xSr_xCuO₄
　JETP Letters 108 (2018) 675-679
　I. I. Gimazova, T. Adachi, K. Omori, Y. Tanabe, Y. Koike and Yu. I. Talanov.

・Impurity Effects on the Electronic State in the Undoped (Ce-free) Superconductor T'-La_1.8Eu_0.2CuO₄ Studied by Muon Spin Relaxation
　Journal of the Physical Society of Japan 87 (2018) 094717(1-5)
　T. Kawamata, K. Ohashi, T. Takamatsu, T. Adachi, M. Kato, I. Watanabe and Y. Koike.

・Thermal Conductivity due to Spins in the Frustrated Two-Leg Spin Ladder System BiCu₂PO₆
　Journal of the Physical Society of Japan 87 (2018) 074702(1-5)
　T. Kawamata, H. Nagasawa, K. Naruse, M. Ohno, Y. Matsuoka, Y. Hagiya, M. Fujita, T. Sasaki, and Y. Koike.

・Development of Ferromagnetic Fluctuations in Heavily Overdoped (Bi,Pb)₂Sr₂CuO_6+δ Copper Oxides
　Physical Review Letters 121 (2018) 057002(1-6)
　K. Kurashima, T. Adachi, K. M. Suzuki, Y. Fukunaga, T. Kawamata, T. Noji, H. Miyasaka, I. Watanabe, M. Miyazaki, A. Koda, R. Kadono and Y. Koike.

・Effects of the Ba-substitution for Sr in the Bi-2201 phase of BiPb(Sr,La)₂CuO_6+δ
　Journal of Physics: Conference Series, 1054 (2018) 012007(1-4)
　 D. Hayakawa, T. Watanabe, T. Luo, T. Kawamata, T. Noji, M. Kato and Y. Koike.

・Superconductivity above 100 K in the Bi-2212 phase of (Bi,Pb)₂Sr₂CaCu₂O₈
　Journal of Physics: Conference Series, 1054 (2018) 012008(1-4)
　 K. Sugawara, C. Sugimoto, T. Luo, T. Kawamata, T. Noji, M. Kato and Y. Koike.

・Dependence of T_c on the RE-ion size in (RE,Ca)Ba₂Cu₃O₆
　Journal of Physics: Conference Series, 1054 (2018) 012011(1-5)
　 K. Nakagawa, Y. Sumino, H. Chiba, K. Kim, T. Noji, M. Kato and Y. Koike.

・Magnetic field effect in stripe-ordered 214(La_1.6-xNd_0.4)Sr_xCuO4 and La_2-xBa_xCuO₄ superconducting cuprates studied by resonant soft x-ray scattering.
　Physical Review B, 97 (2018) 195130(1-5)
　S. Blanco-Canosa, E. Schierle, Z. W. Li, H. Guo, T. Adachi, Y. Koike, O. Sobolev, E. Weschke, A. C. Komarek, and C. Schusler-Langeheine.

・Superconductivity in BaPtSb with an Ordered Honeycomb Network.
　Journal of the Physical Society of Japan, 87 (2018) 063702(1-2)
　K. Kudo, Y. Saito, T. Takeuchi, S. Ayukawa, T. Kawamata, S. Nakamura, Y. Koike and M. Nohara.

・Application of electrochemical method to microfabricated region in single-crystal device of FeSe_1-xTe_x superconductors.
　Japanese Journal of Applied Physics, 57 (2018) 040305(1-3) (RAPID COMMUNICATION)
　K. Okada, T. Takagi, M. Kobayashi, H. Ohnuma, T. Noji, Y. Koike, S. Ayukawa and H. Kitano

・New Lithium- and Diamine-Intercalated Superconductors Li_x(C_nH_2n+4N₂)_yMoSe₂ (n = 2, 6)
　Journal of the Physical Society of Japan, 87 (2018) 054704
　K. Sato, T. Noji, T. Hatakeda, T. Kawamata, M. Kato and Y. Koike.

・Optical study of electron-doped cuprate Pr_1.3-xLa_0.7Ce_xCuO_4+δ in under-doped regime: Revisit the phase diagram
　Journal of the Physical Society of Japan, 87 (2018) 043705(1-5)
　R. Ohnishi, M. Nakajima, S. Miyasaka, S. Tajima, T. Adachi, T. Ohgi, A. Takahashi, Y. Koike.

・Direct Observation of the Quantum Phase Transition of SrCu2(BO3)2 by High-pressure and Terahertz Electron Spin Resonance.
　Journal of the Physical Society of Japan, 87 (2018) 033701(1-4)
　T. Sakurai, Y. Hirao, K. Hijii, S. Okubo, H. Ohta, Y. Uwatoko, K. Kudo and Y. Koike.

・Reduction effects on the Cu-spin correlation in the electron-doped T'-cuprate Pr_1.3-xLa_0.7Ce_xCuO_4+d (x = 0.10)
　JPS Conference Proceedings, 21 (2018) 011027(1-5)
　T. Sumura, T. Ishimoto, H. Kuwahara, K. Kurashima, Y. Koike, I. Watanabe, M. Miyazaki, A. Koda, R. Kadono, T. Adachi.

・New ethylenediamine-intercalated superconductor (C₂H₈N₂)_yTa₂PdSe₆ with T_c = 4.5 K
　 Journal of Physics: Conference Series, 969 (2018) 012076(1-5)
　 S. Nakamura, T. Noji, T. Hatakeda, K. Sato, T. Kawamata, M. Kato and Y. Koike.

・Superconductivity in Lithium- and Diamines-Intercalated TiSe₂ and MoSe₂
　Journal of Physics: Conference Series, 969 (2018) 012077(1-6)
　 K. Sato, T. Noji, T. Hatakeda, T. Kawamata, M. Kato and Y. Koike.

・Synthesis and characterization of La_2-yY_yCuO₄ with T'-structure
　Journal of Physics: Conference Series, 1080 (2018) 012005(1-5)
　 A. I. Hanifah, S. Saito, T. Saragi, T. Kawamata, Y. Koike and Risdiana.

・Generation of spin currents from one-dimensional quantum spin liquid
　Journal of Applied Physics, 123 (2018) 123903(1-8)
　 D. Hirobe, T. Kawamata, K. Oyanagi, Y. Koike and E. Saitoh.

【2017年】

・Novel electronic state and superconductivity in the electron-doped high-T_c T’-superconductors
　Condensed Matter, 2 (2017) 23(1-16)
　T. Adachi, T. Kawamata, Y. Koike.

・Superconducting fluctuations above the critical temperature in Bi₂Sr₂Ca_1-xY_xCuO_8+d as revealed by microwave absorption
　Applied Magnetic Resonance, 48 (2017) 861-870
　I. Gimazov, Yu. Talanov, V. Sakhin, T. Adachi, T. Noji, Y. Koike.

・Pressure tuning of structure, superconductivity, and novel magnetic order in the Ce-underdoped electron-doped cuprate T' Pr_1.3-xLa_0.7Ce_xCuO₄ (x=0.1)
　Physical Review B, 96 (2017) 094515
　Z. Guguchia, T. Adachi, Z. Shermadini, T. Ohgi, J. Chang, E. S. Bozin, F. von Rohr, A. M. dos Santos, J. J. Molaison, R. Boehler, Y. Koike, A. R. Wieteska, B. A. Frandsen, E. Morenzoni, A. Amato, S. J. L. Billinge, Y. J. Uemura, R. Khasanov.

・Undoped high-Tc superconductivity in T'-La_1.8Eu_0.2CuO_4+δ revealed by ^63,65Cu and ¹³⁹La NMR: Bulk superconductivity and antiferromagnetic fluctuations
　Physica C, 541 (2017) 30
　H. Fukazawa, S. Ishiyama, M. Goto, S. Kanamaru, K. Ohashi, T. Kawamata, T. Adachi, M. Hirata, T. Sasaki, Y. Koike, Y. Kohori.

・New Lithium- and Diamines-Intercalated Superconductors Li_x(C₂H₈N₂)_yTiSe₂ and Li_x(C₆H₁₆N₂)_yTiSe₂
　Journal of the Physical Society of Japan, 86 (2017) 104701
　K. Sato, T. Noji, T. Hatakeda, T. Kawamata, M. Kato and Y. Koike.

・One-dimensional spinon spin currents
　Nature Physics, 13 (2017) 30
　D. Hirobe, M. Sato, T. Kawamata, Y. Shiomi, K. Uchida, R. Iguchi, Y. Koike, S. Maekawa and E. Saitoh.

・Protected Vacuum Annealing Effect on Single Crystals of Pr_1-xLaCe_xCuO₄ in the Overdoped Regime
　Materials Science and Engineering, 196 (2017) 012011
　M. A. Baqiya, B. Triono, Darminto, T. Adachi, A. Takahashi, T. Konno, M. Watanabe, T. Prombood and Y. Koike.

・銅酸化物におけるキャリヤーノンドープ超伝導
　パリティ, 32 (2017) 14
　足立匡、小池洋二.

【2016年】

・ S=1/2 triangular-lattice antiferromagnets Ba₃CoSb₂O₉ and CsCuCl₃: Role of Spin-orbit coupling, crystalline electric field effect, and Dzyalosinskii-Moriya interaction
　Physical Review B, 94 (2016) 214408
　A. Sera, Y. Kousaka, J. Akimitsu, M. Sera, T. Kawamata, Y. Koike and K. Inoue.

・ Successive Magnetic Transitions Relating to Itinerant Spins and Localized Cu Spins in La_2-xSr_xCu_1-yFe_yO₄:Possible Existence of Stripe Correlations in the Overdoped Regime
　Journal of the Physical Society of Japan, 85 (2016) 124705
　K. M. Suzuki, T. Adachi, H. Sato, I. Watanabe, and Y. Koike.

・ Strong Electron Correlation behind the Superconductivity in Ce-Free and Ce-Underdoped High-T_c T'-Cuprates
　Journal of the Physical Society of Japan, 85 (2016) 114716
　T. Adachi, A. Takahashi, K. M. Suzuki, M. A. Baqiya, T. Konno, T. Takamatsu, M. Kato, I. Watanabe, A. Koda, M. Miyazaki, R. Kadono and Y. Koike.

・ New Alkali-Metal- and 2-Phenethylamine-Intercalated Superconductors A_x(C₈H₁₁N)_yFe_1-zSe (A = Li, Na) with the Largest Interlayer Spacings and Tc~40 K
　Journal of the Physical Society of Japan, 85 (2016) 103702
　T. Hatakeda, T. Noji, K. Sato, T. Kawamata, M. Kato and Y. Koike.

・ Superconductivity and Intercalation State in the Lithium-Hexamethylenediamine-Intercalated Superconductor Li_x(C₆H₁₆N₂)_yFe_2-zSe₂: Dependence on the Intercalation Temperature and Lithium Content
　Journal of the Physical Society of Japan, 85 (2016) 104701
　S. Hosono, T. Noji, T. Hatakeda, T. Kawamata, M. Kato and Y. Koike.

・ Metal-insulator transition and psudogap in Bi_1.76Pb_0.35Sr_1.89CuO_6+d high-T_c cuprates
　Physical Review B, 94 (2016) 115123
　M. Miyazaki, R. Kadono, M. Hiraishi, A. Koda, K. M. Kojima, Y. Fukunaga, Y. Tanabe, T. Adachi and Y. Koike.

・ Pairing Symmetry Studied from Impurity Effects in the Underdoped Superconductor T'-La_1.8Eu_0.2CuO₄.
　Journal of the Physical Society of Japan, 85 (2016) 093703
　K. Ohashi, T. Kawamata, T. Takamatsu, T. Adachi, M. Kato and Y. Koike.

・ 超伝導体のμSR研究 ―銅酸化物高温超伝導体における磁性―
　RADIOISOTOPES, 65 (2016) 325
　小池洋二、足立匡.

・ Suppression　of　the　antiferromagnetic　pseudogap　in　the　electron-doped　high-temperature　superconductor by protect annealing.
　Nature Communications, 7 (2016) 10567
　M. Horio, T. Adachi, Y. Mori, A. Takahashi, T. Yoshida, H. Suzuki, L. C. C. Ambolode Ⅱ, K. Okazaki, K. Ono, H. Kumigashira, H. Anzai, M. Arita, H. Namatame, M. Taniguchi, D. Ootsuki, K. Sawada, M. Takahashi, T. Mizokawa, Y. Koike, and A. Fujimori.

・ New Superconducting Phase of Li_x(C₆H₁₆N₂)_yFe_2-zSe₂ with T_c = 41 K Obtained through the Post-Annealing.
　Journal of the Physical Society of Japan, 85 (2016) 013702
　S. Hosono, T. Noji, T. Hatakeda, T. Kawamata, M. Kato and Y. Koike.

・ Existence of Large Antiferromagnetic Spin Fluctuations in Ce-Doped T’-Cuprate Superconductors.
　Journal of the Physical Society of Japan, 85 (2016) 024708
　M. Yamamoto, Y. Kohori, H. Fukazawa, A. Takahashi, T. Ohgi, T. Adachi and Y. Koike

・ Observation of momentum-resolved charge fluctuations proximate to the charge-order phase using resonant inelastic x-ray scattering.
　Scientific Reports, 6 (2016) 23611/1-8
　M.Yoshida, K. Ishii, M. Naka, S. Ishihara, I. Jarrige, K. Ikeuchi, Y. Murakami, K. Kudo, Y. Koike, T. Nagata, Y. Fukuda, N. Ikeda and J. Mizuki.

・ Thermal Conductivity and Spin State of the Spin Diamond-Chain System Azurite Cu₃(CO₃)₂(OH)₂.
　Journal of the Physical Society of Japan, 85 (2016) 034715/1-4
　Y. Hagiya, T. Kawamata, K. Naruse, M. Ohno, Y. Matsuoka, H. Sudo, H. Nagasawa, H. Kikuchi, T. Sasaki and Y. Koike.

・ Mesoscopic Stripes in Antiferromagnetic Fe Chalcogenide Probed by Scanning Photoelectron Spectromicroscopy.
　Journal of the Physical Society of Japan, 85 (2016) 033702/1-4
　T. Mizokawa, M. Bendele, A. Barinov, A. Iadecola, B. Joseph, T. Noji, Y. Koike and N. L. Saini.

・ μSR Studies on Magnetism in High-T_c Cuprates.
　Journal of the Physical Society of Japan, 85 (2016) 091006/1-12
　Y. Koike and T. Adachi


【2015年】

・ Enhanced superconducting transition temperature in hyper-interlayer-expanded FeSe despite the suppressed electronic nematic order and spin fluctuations.
　 Phys. Rev. B, 92 (2015) 094513
　 M. M. Hrovat, P. Jeglič, M. Klanjšek, T. Hatakeda, T. Noji, Y. Tanabe, T. Urata, K. K. Huynh, Y. Koike, K. Tanigaki and D. Arčon.

・ Development of High-Pressure and Multi-Frequency ESR System and Its Application to Quantum Spin System.
　 Appl. Mag. Resonance, 46 (2015) 1007
　 T. Sakurai, R. Matsui, K. Kawasaki, S. Okubo, H. Ohta, K. Matsubayashi, Y. Uwatoko, K. Kudo and Y. Koike.

・ Fabrication of glass-ceramics containing spin-chain compound SrCuO₂ and its high thermal conductivity
　Appl. Phys. Lett, 106 (2015) 141902
　N. Terakado, K. Watanabe, T. Kawamata, Y. Yokochi, Y. Takahashi, Y. Koike and T. Fujiwara.

・ Unscaling Superconducting Parameters with Tc for Bi-2212 and Bi-2223: A Magnetotransport Study in the Superconductive Fluctuation Regime.
　J. Phys. Soc. Jpn, 84 (2015) 024706
　S. Adachi, T. Usui, Y. Ito, H. Kudo, H. Kushibiki, K. Murata, T. Watanabe, K. Kudo, T. Nishizaki, N. Kobayashi, S. Kimura, M. Fujita, K. Yamada, T. Noji, Y. Koike and T. Fujii

・ Study of Thermal Conductivity due to Spins in One-Dimensional Spin Systems AFeX₃ (A = Rb, Cs; X= Cl, Br)
　Mater. Sci. Forum, 827 (2015) 243
　 R. Tasomara, T. Kawamata, Y. Matsuoka, H. Sudo, K. Naruse, M. Ono, H. Nagasawa, Y. Hagiya, T. Sasaki, Risdiana and Y. Koike

・ EPR Study of the Local Magnetic Field Distribution over the Bi₂Sr₂Ca_1-xY_xCu₂O_8+y
　Crystal Surface above the Superconducting Transition Temperature.
　Appl. Mag. Resonance, 46 (2015) 897
　Y. Talanov, L. Salakhutdinov, T. Adachi, T. Noji and Y. Koike

・Resolving unoccupied electronic states with laser ARPES in bismuth-based cuprate superconductors
　Phys. Rev. B, 91 (2015) 085109
　T. L. Miller, M. Ärrälä, C. L. Smallwood, W. Zhang, H. Hafiz, B. Barbiellini, K. Kurashima, T. Adachi, Y. Koike, H. Eisaki, M. Lindroos, A. Bansil, D.-H. Lee and A. Lanzara

・Electrochemical Na-intercalation-ibduced high temperature superconductivity in FeSe.
　Physica C, 91 (2015) 085109
　T. Kajita, T. Kawamata, T. Noji, T. Hatakeda, M. Kato, Y. Koike and T. Itoh

・1D and 2D Bi Compounds in Field-Effect Transistors.
　Advanced Electronic Materials, 1 (2015) 1500085
　E. Uesugi, S. Nishiyama, H. Akiyoshi, H. Goto, Y. Koike, K. Yamada and Y. Kubozono.

・Magnetic State of the Geometrically Frustrated Quasi-One-Dimensional Antiferromagnet Cu₃Mo₂O₉ Studied by Thermal conductivity.
　Journal of the Physical Society of Japan, 84 (2015) 124601
　K. Naruse, T. Kawamata, M. Ohno, Y. Matsuoka, M. Hase, H. Kuroe, T. Sekine, K. Oka, T. Ito, H. Eisaki, T. Sasaki and Y. Koike.

・Real Space Imaging of Spin Polarons in Zn-doped SrCu₂(BO₃)₂.
　Phys. Rev. Lett., 1141 (2015) 056402.
　M. Yoshida, H. Kobayashi, I. Yamauchi, M. Takigawa, S. Capponi, D. Poilblanc, F. Mila, K. Kudo, Y. Koike and N. Kobayashi

・Behaviour of the second magnetization peak in La_2-xSr_xCuO₄ single crystals upon entering the doping domain of static stripe order. 　Physica C, 519 (2015) 79 　L.Miu, A. M. Ionescu, I. Ivan, D. Miu, T. Adachi, K. Omori and Y. Koike.

・Influence of optically quenched superconductivity on quasiparticle relaxation rates in Bi₂Sr₂CaCu₂O_8+δ.
　Physical Review B, 92 (2015)1161102.
　C. L. Smallwood, W. Zhang, T. L. Miller, G. Affeldt, K. Kurashima, C. Jozwiak, T. Noji, Y. Koike, H. Eisaki, D.-H. Lee, R. A. Kaindl and A. Lanzara

【2014年】

・ Thermal Conductivity in the Triangular-Lattice Antiferromagnet Ba₃CoSb₂O₉
　J. Phys.: Conference Series, 568 (2014) 042014
　K. Naruse, T. Kawamata, M. Ohno, Y. Matsuoka, H. Sudo, H. Nagasawa, Y. Hagiya, T.Sasaki and Y. Koike

・ Thermal Conductivity of the S = 1/2 Quasi-One-Dimensional Ferromagnetic Spin System CsCuCl₃
　J. Phys.: Conference Series, 568 (2014) 042013
　T. Kawamata, H. Sudo, Y. Matsuoka, K. Naruse, M. Ohno, T. Sasaki and Y. Koike

・ Thermal Conductivity in the Frustrated Two-Leg Spin-Ladder System BiCu₂PO₆
　J. Phys.: Conference Series, 568 (2014) 042012
　H. Nagasawa, T. Kawamata, K. Naruse, M. Ohno, Y. Matsuoka, H. Sudo, Y. Hagiya, M. Fujita, T. Sasaki and Y. Koike

・ Resistive superconducting transition and effects of atmospheric exposure in the intercalation superconductor A_x(C₂H₈N₂)_yFe_2-zSe₂ (A = Li, Na)
　J. Phys.: Conference Series, 568 (2014) 022032
　T. Hatakeda, T. Noji, S. Hosono, T. Kawamata, M. Kato and Y. Koike

・ Possible ferromagnetic phase in non-superconducting heavily overdoped cuprates of Bi-2201
　J. Phys.: Conference Series, 568 (2014) 022003
　K. Kurashima, T. Adachi, K. M. Suzuki, Y. Fukunaga, T. Kawamata, T. Noji and Y. Koike

・ Electronic Homogeneity in the Overdoped Regime of the Electron-Doped High-T_c Superconductors
　J. Phys.: Conference Series, 568 (2014) 022002
　M. A. Baqiya, T. Adachi, A. Takahashi, T. Prombood, M. Watanabe, K. Fukumoto, Y. Tanabe and Y. Koike

・ Intrisic anisotropy of the superconductivity in FeSe_1-xTe_x (x = 0.6) observed by specific heat in magnetic fields
　J. Phys.: Conference Series, 568 (2014) 022001
　T. Konno, T. Adachi, M. Imaizumi, T. Noji, T. Kawamata and Y. Koike

・An Effect of the Supercell Calculation on Muon Positions and Local Deformations of Crystal Structure in La₂CuO₄
　J. Phys.: Conference Series , 551 (2014) 012051
　B. Adiperdana, E. Suprayoga, N. Adam, S. S. Mohd-Tajudin, A. F. Rozlan, S. Sulaiman, M. I. Mohamed-Ibrahim, T. Kawamata, T. Adachi, I. A. Dharmawan, R. E. Siregar, Y. Koike and I. Watanabe

・Superconducting Gap and Symmetry in FeSe_1-xTe_x Studied by Specific Heat in Magnetic Fields
　J. Phys. Soc. Jpn. 83 (2014) 094721.
　T. Konno, T. Adachi, M. Imaizumi, T. Noji, T. Kawamata and Y. Koike

・Superconductivity in Hole-Doped La_1.8-xEu_0.2Ca_xCuO₄ with the Nd₂CuO₄-Type Structure
　Physics Procedia 58 (2014) 46
　T. Takamatsu, M. Kato, T. Noji and Y. Koike

・Specific heat in magnetic fields and superconducting gap structure in FeSe_1-xTe_x (0.6≦x≦1)
　Physica C, 504 (2014) 16
　(Proc. of the 26th Int. Symposium on Superconductivity (ISS2013), Tokyo, 2013)
　T. Konno, T. Adachi, M. Imaizumi, T. Noji, T. Kawamata and Y. Koike

・Doping Dependencies of Onset Temperatures for the Pseudogap and Superconductive Fluctuation in Bi₂Sr₂CaCu₂O_8+δ, Studied from Both In-Plane and Out-of-Plane Magnetoresistance Measurements
　J. Phys. Soc. Jpn. 83 (2014) 064713.
　T. Usui, D. Fujiwara, S. Adachi, H. Kudo, K. Murata, H. Kushibiki, T. Watanabe, K. Kudo, T. Nishizaki, N. Kobayashi, S. Kimura, K. Yamada, T. Naito, T. Noji and Y. Koike

・Charge-orbital-lattice coupling effects in the dd-excitation profile of one-dimensional cuprates
　Phys. Rev. B, 89 (2014) 041104(R) (Papers of Editors’ Suggestion)
　J. J. Lee, B. Moritz, W. S. Lee, M. Yi, C. J. Jia, A. P. Sorini, K. Kudo, Y. Koike, K. J. Zhou, C. Monney, V. Strocov, L. Patthey, T. Schmitt, T. P. Devereaux and Z. X. Shen

・Ultrafast quenching of electron-boson interaction and superconducting gap in a cuprate superconductor
　Nature Communications, 5 (2014) 4959.
　W. Zhang, C. Hwang. C. L. Smallwood, T. L. Miller, G. Affeldt, K. Kurashima, C. Jozwiak, H. Eisaki, T. Adachi, Y. Koike, D.-H. Lee and A. Lanzara.

・Possible Existence of the Stripe Correlations in Electron-Doped Superconducting Cuprates Eu_1.85Ce_0.15Cu_1-yNi_yO_4-α+δ Studied by Muon-Spin-Relaxation
　Advanced Materials Science, 896 (2014) 354.
　Risdiana, L. Safriani, W. A. Somantri, T. Saragi, T. Adachi, I. Kawasaki, I. Watanabe and Y. Koike

・C-axis I-V characteristics of Fe(Se,Te) single crystals as intrinsic Josephson junction stacks
　JPS Conference Proceedings. 1 (2014) 012123.
　S. Ayukawa, H. Kitano, T. Noji and Y. Koike

・Momentum-resolved resonant inelastic X-ray scattering on a single crystal under high pressure
　J. Synchrotron Radiation 21 (2014) 131.
　M. Yoshida, K. Ishii, I. Jarrige, T. Watanuki, K. Kudo, Y. Koike, K. Kumagai, N. Hiraoka, H. Ishii, K. -D. Tsuei, and J. Mizuki

・New intercalation superconductor Li_x(C₆H₁₆N₂)_yFe_2-zSe₂ with a very large interlayer-spacing and T_c = 38 K
　J. Phys. Soc. Jpn. 83 (2014) 113704.
　S. Hosono, T. Noji, T. Hatakeda, T. Kawamata, M. Kato, and Y. Koike

・Synthesis and post-annealing effects of alkaline-metal-ethylenediamineintercalated superconductors A_x(C₂H₈N₂)_yFe_2-zSe₂ (A=Li, Na) with T_c = 45 K
　Physica C 504 (2014) 8.
　T. Noji, T. Hatakeda, S. Hosono, T. Kawamata, M. Kato, and Y. Koike
・Synthesis of a new superconductor EuSr₂Cu₂(Ta,Sn)O_8-y
　Physica C 504 (2014) 1.
　S. Sato, K. Kim, M. Kato, T. Noji, and Y. Koike

・Spectromicroscopy of electronic phase separation in K_xFe_2-ySe₂ superconductor
　Scientific Reports 4 (2014) 5592.
　M. Bendele, A. Barinov, B. Joseph, D. Innocenti, A. Iadecola, A. Bianconi, H. Takeya, Y. Mizuguchi, Y. Takano, T. Noji, T. Hatakeda, Y. Koike, M. Horio, A. Fujimori, D. Ootsuki, T. Mizokawa and N. L. Saini

・Development of Spatial Inhomogeneity of Internal Magnetic Field Above Tc in Bi₂Sr₂Ca_1-xY_xCu₂O_8+d Observed by Longitudinal-Field Muon Spin Relaxation
　J. Phys. Soc. Jpn. 83 (2014) 074707.
　Y. Tanabe, T. Adachi, K. M. Suzuki,M. Akoshima, S. Heguri, T. Kawamata, Y. Ishii, T. Suzuki, I. Watanabe, and Y. Koike

・Observation of the Thermal Conductivity due to Spins in the One-Dimensional Antiferromagnetic Ising-Like Spin System ACoX₃ (A = Rb, Cs; X = Cl, Br)
　J. Phys. Soc. Jpn. 83 (2014) 064603.
　Y. Matsuoka, T. Kawamata, K. Naruse, M. Ohno, Y. Nishiwaki, T. Kato, T. Sasaki and Y. Koike

・Thermal Conductivity due to Spinons in the One-Dimensional Quantum Spin System Sr₂V₃O₉
　J. Phys. Soc. Jpn. 83 (2014) 054601.
　T. Kawamata, M. Uesaka, M. Sato, K. Naruse, K. Kudo, N. Kobayashi, and Y. Koike

・Thermal Conductivity and Annealing Effects in the Iron-Based Superconductor FeSe_0.3Te_0.7
　J. Phys. Soc. Jpn. 83 (2014) 044704.
　M. Ohno, T. Kawamata, T. Noji, K. Naruse, Y. Matsuoka, T. Adachi, T. Nishizaki, T. Sasaki and Y. Koike

・Nd₂CuO₄構造（T’構造）を有する電子型銅酸化物における還元処理による電子状態の変化とノンドープ超伝導のメカニズム
　固体物理 49 (2014) 333.
　足立匡，小池洋二

【2013年】

・New Li-Ethylenediamine-Intercalated Superconductor Li_x(C₂H₈N₂)_yFe_2-zSe₂ with T_c = 45 K
　J. Phys. Soc. Jpn. 82 (2013) 123705.
　T. Hatakeda, T. Noji, T. Kawamata, M. Kato, and Y. Koike

・Electronic structure and phase separation of superconducting and nonsuperconducting K_xFe_2-ySe₂ revealed by x-ray photoemission spectroscopy
　Phys. Rev. B 88 (2013) 224517.
　M. Oiwake, D. Ootsuki, T. Noji, T. Hatakeda, Y. Koike, M. Horio, A. Fujimori, N. L. Saini and T. Mizokawa

・A Mossbauer effect study of single crystals of the non-superconducting parent compound Fe_1.09Te and the superconductor FeSe_0.4Te_0.6
　J. Phys.: Condens. Matt. 25 (2013) 416008.
　Z. M. Stadnik, P. Wang, J. ?ukrowski, T. Noji and Y. Koike

・Development of Hybrid-Type Pressure Cell for High-Pressure and High-Field ESR Measurement
　Appl. Magn. Resonance 44 (2013) 893.
　K. Fujimoto, T. Sakurai, S. Okubo, H. Ohta, K. Matsubayashi, Y. Uwatoko, K. Kudo and Y. Koike

・New superconductor EuSr₂Cu₂(Nb,Sn)O_8-y with the RE-123 type structure
　Physics C 492 (2013) 165.
　K. Kim, M. Kato, T. Noji and Y. Koike

・Role of Lattice Coupling in Establishing Electronic and Magnetic Properties in Quasi-One-Dimensional Cuprates
　Phys. Rev. Lett. 110 (2013) 265502.
　W. S. Lee, S. Johnston, B. Moritz, J. Lee, M. Yi, K. J. Zhou, T. Schmitt, L. Patthey, V. Strocov, K. Kudo, Y. Koike, J. van den Brink, T. P. Devereaux and Z. X. Shen

・Electric-double-layer transistors with thin crystals of FeSe_1-xTe_x (x = 0.9 and 1.0)
　Appl. Phys. Lett. 102 (2013) 103506.
　R. Eguchi, M. Senda, E. Uesugi, H. Goto, T. Kambe, T. Noji, Y. Koike, A. Fujiwara and Y. Kubozono

・Evolution of the Electronic State through the Reduction Annealing in Electron-Doped Pr_1.3-xLa_0.7Ce_xCuO_4+δ (x = 0.10) Single Crystals: Antiferromagnetism, Kondo Effect, and Superconductivity
　J. Phys. Soc. Jpn. 82 (2013) 063713.
　T. Adachi, Y. Mori, A. Takahashi, M. Kato, T. Nishizaki, T. Sasaki, N. Kobayashi, Y. Koike

・Synthesis of Perovskite-type Hydrides APdH₃ (A = Sr, Ba) by a New Method Using CaH₂ as a H₂-Source
　Physics Procedia 45 (2013) 109.
　H. Yagyu, M. Kato, T. Noji, Y. Koike

・Anomalous momentum dependence of the multiband electronic structure of FeSe_1-xTe_x superconductors induced by atomic disorder
　Journal of the Physical Society of Japan 82 (2013) 053705.
　T. Sudayama, D. Ootsuki, Y. Wakisaka, T. Mizokawa, N. L. Saini, M. Arita, H. Namatame, M. Taniguchi, T. Noji and Y. Koike

・Superconducting symmetry studied from impurity effects in single-crystal Fe_1-yM_ySe_0.3Te_0.7 (M = Co, Ni, Zn)
　Journal of the Physical Society of Japan 82 (2013) 044712.
　T. Inabe, T. Kawamata, T. Noji, T. Adachi and Y. Koike

・Resonant inelastic x-ray scattering study of intraband charge excitations in hole-doped high-T_c cuprates
　Physical Review B 87 (2013) 104511.
　S. Wakimoto, K. Ishii, H. Kimura, K. Ikeuchi, M. Yoshida, T. Adachi, D. Casa, M. Fujita, Y. Fukunaga, T. Gog, Y. Koike, J. Mizuki and K. Yamada

・Thermal conductivity due to magnons in high-quality single crystals of the two-leg spin-ladder system (Ca,Sr,La)₁₄Cu₂₄O₄₁
　Solid State Communications 154 (2013) 60.
　K. Naruse, T. Kawamata, M. Ohno, Y. Matsuoka, K. Kumagai and Y. Koike

・Specific heat of stage-2 MnCl₂ graphite intercalation compound: co-existence of spin glass phase and incommensurate short-range spin order
　Journal of the Physical Society of Japan 82 (2013) 124710.
　M. Suzuki, I. S. Suzuki, T. Adachi and Y. Koike

・なぜ？「室温」での超伝導材料の開発は難しいのか？
　月刊マテリアルステージ 13 No.1 (2013) 3 （通巻145号）.
　小池洋二

【2012年】

・Anisotropic behavior of thermal conductivity in the Bose-Einstein condensed state of the bond-alternating spin-chain system Pb₂V₃O₉
　Journal of Physics: Conference Series 400 (2012) 032079.
　M. Sato, T. Kawamata, K. Naruse, K. Kudo, N. Kobayashi and Y. Koike

・Inhomogeneity of superconductivity and stripe correlations at x ~ 0.21 in La_2-xSr_xCuO₄
　Journal of Physics: Conference Series 400 (2012) 022074.
　M. Miyazaki, T. Adachi, Y. Tanabe, H. Sato, T. Nishizaki, K. Kudo, T. Sasaki, N. Kobayashi and Y. Koike

・Superconductivity and electronic state of annealed single-crystals of FeSe_1-xTe_x (0.6≦x≦1) studied by specific heat
　Journal of Physics: Conference Series 400 (2012) 022034.
　M. Imaizumi, T. Noji, T. Adachi and Y. Koike

・On the nature of the second magnetization peak in FeSe_1-xTe_x single crystals
　Superconductor Science and Technology 25 (2012) 115009.
　D. Miu, T. Noji, T. Adachi, Y. Koike and L. Miu

・Impurity and magnetic field effects on the stripes in cuprates
　Physica C 481 (2012) 115.
　Y. Koikie and T. Adachi

・Curie-like paramagnetism due to incomplete Zhang-Rice singlet formation in La_2-xSr_xCuO₄
　Physical Review B 86 (2012) 054522.
　C. V. Kaiser W. Huang, S. Komiya, N. E. Hussey, T. Adachi, Y. Tanabe, Y. Koike and J. E. Sonier

・Distinct Fe-induced magnetic states in the underdoped and overdoped regimes of La_2-xSr_xCu_1-yFe_yO₄ revealed by muon spin relaxation
　Physical Review B 86 (2012) 014522.
　K. M. Suzuki, T. Adachi, Y. Tanabe, H. Sato, Y. Koike, Risdiana, Y. Ishii, T. Suzuki and I. Watanabe

・Undoped and hole-doped superconductors T'-La_1.8-xEu_0.2Sr_xCuO₄ (x = 0 and 0.05) prepared by solid-state reaction
　Applied Physics Express 5 (2012) 073101.
　T. Takamatsu, M. Kato, T. Noji and Y. Koike

・Cu-spin fluctuations in hole- and electron-doped high-T_c superconducting cuprates relating to stripe pinning
　AIP Conferece Proceedings 1454 (2012) 275.
　Risdiana, T. Adachi, I. Watanabe and Y. Koike

・Ferromagnetism in 2212 phase Bi-Sr-Ca-Cu-O nano-superconductors
　AIP Conferece Proceedings 1454 (2012) 260.
　M. A. Baqiya, H. Widodo, L. Rochmawati, Darminto, T. Adachi and Y. Koike

・In-plane Cu-O bond distribution and charge inhomogeneity in La_2-xSr_xCuO₄ as a function of doping
　Journal of Applied Physics 111 (2012) 112622.
　N. L. Saini, H. Oyanagi, T. Adachi, T. Noji, H. Sato and Y. Koike

・Orbital degeneracy, Jahn-Teller effect, and superconductivity in transition-metal chalcogenides
　Journal of Superconductivity and Novel Magnetism 25 (2012) 1343.
　T. Mizokawa, T. Sudayama, Y. Wakisaka, D. Ootsuki, M. Imaizumi, T. Noji, Y. Koike, S. Pyon, K. Kudo, M. Nohara, H. Anzai, M. Arita, H. Namatame, M. Taniguchi and N. L. Saini

・Fe-substitution effects on the Cu-spin correlation in La_2-xSr_xCu_1-yFe_yO₄ studied by muon spin relaxation
　Physics Procedia 30 (2012) 275.
　K. Suzuki, T. Adachi, Y. Tanabe, H. Sato, Risdiana, Y. Ishii, T. Suzuki, I. Watanabe and Y. Koike

・Specific-heat study of superconducting and normal states in FeSe_1-xTe_x (0.6≦x≦1) single crystals: Strong-coupling superconductivity, strong electron-correlation, and inhomogeneity
　Journal of the Physical Society of Japan 81 (2012) 054708.
　T. Noji, M. Imaizumi, T. Suzuki, T. Adachi, M. Kato and Y. Koike

・Synthesis and specific heat of CaPdH_3-δ with the perovskite structure
　Journal of the Physical Society of Japan 81 (2012) 034704.
　S. Ayukawa, K. Ikeda, M. Kato, T. Noji, S. Orimo and Y. Koike



【2011年】

・Low-temperature synthesis of T'-La₂CuO₄ using CaH₂ as reductant
　Physica C 471 (2011) 679.
　T. Takamatsu, M. Kato, T. Noji and Y. Koike

・Annealing effects on the crystal structure and physical properties of FeSe_1-xTe_x (0.6≦x≦1) single crystals
　Physica C 471 (2011) 614.
　M. Imaizumi, T. Noji, T. Adachi and Y. Koike

・Hidden itinerant-spin phase in heavily overdoped La_2-xSr_xCuO₄ superconductors revealed by dilute Fe doping: A combined neutron scattering and angle-resolved photoemission study
　Physical Review Letters 107 (2011) 127002.
　R.-H. He, M. Fujita, M. Enoki, M. Hashimoto, S. Iikubo, S.-K. Mo, H. Yao, T. Adachi, Y. Koike, Z. Hussain, Z.-X. Shen andK. Yamada

・⁶³Cu-NMR study on high-T_c superconductor La_2-xBa_xCuO₄
　Journal of Physics: Conference Series 302 (2011) 012010.
　Y. Shindo, T. Goto, K. Nakamura, T. Takao, T. Adachi and Y. Koike

・Phase-fluctuating superconductivity in overdoped La_2-xSr_xCuO₄
　Nature Physics 7 (2011) 455.
　P. M. C. Rourke, I. Mouzopoulou, X. Xu, C. Panagopoulos, Y. Wang, B. Vignolle, C. Proust, E. V. Kurganova, U. Zeitler, Y. Tanabe, T. Adachi, Y. Koike and N. E. Hussey

・Development of Cu-spin correlation in Bi_1.74Pb_0.38Sr_1.88Cu_1-yZn_yO_6+δ high-temperature superconductors observed by muon spin relaxation
　Physical Review B 83 (2011) 184522.
　T. Adachi, Y. Tanabe, K. Suzuki, Y. Koike, T. Suzuki, T. Kawamata and I. Watanabe

・Similarity between Ni and Zn impurity effects on the superconductivity and Cu-spin correlation in La_2-xSr_xCu_1-yNi_yO₄ high-T_c cuprates: A comparison based on the hole trapping by Ni
　Physical Review B 83 (2011) 144521.
　Y. Tanabe, T. Adachi, K. Suzuki, T. Kawamata, Risdiana, T. Suzuki, I. Watanabe and Y. Koike

・スピンによる熱伝導
　伝熱 50 (2011) No. 211, 12.
　小池洋二，川股隆行

・Hall coefficient in the ground state of stripe-ordered La_2-xBa_xCuO₄ single crystals
　Physical Review B 83 (2011) 060506(R).
　T. Adachi, N. Kitajima and Y. Koike

・Doping dependence of the (π,π) shadow band in La-based cuprates studied by angle-resolved photoemission spectroscopy
　New Journal of Physics 13 (2011) 013031.
　R.-H. He, X. J. Zhou, M. Hashimoto, T. Yoshida, K. Tanaka, S.-K. Mo, T. Sasagawa, N. Mannella, W. Meevasana, H. Yao, M. Fujita, T. Adachi, S. Komiya, S. Uchida, Y. Ando, F. Zhou, Z. X. Zhao, A. Fujimori, Y. Koike, K. Yamada, Z. Hussain and Z.-X. Shen

【2010年】

・Spontaneous strain in Ba_0.6K_0.4BiO₃
　Physica C 470 (2010) S770.
　H. Fujishita, T. Yamada, S. Nakada, H. Okamoto, S. Shitara, M. Kato and Y. Koike

・Superconductivity and electrochemistry of the spinel Li_1+xTi₂O₄
　Physica C 470 (2010) S766.
　S. Hamada, M. Kato, T. Noji and Y. Koike

・Low-temperature synthesis of the infinite-layer compound LaNiO₂ using CaH₂ as reductant
　Physica C 470 (2010) S764.
　T. Takamatsu, M. Kato, T. Noji and Y. Koike

・A new family of superconducting intercalation compound of Mg_xMNCl (M = Zr, Hf)
　Physica C 470 (2010) S760.
　H. Yagyu, M. Kato, H. Tezuka, T. Noji, S. Yamanaka and Y. Koike

・Electrochemical Li-intercalation into the Fe-based superconductor FeSe_1-xTe_x
　Physica C 470 (2010) S487.
　H. Abe, T. Noji, M. Kato and Y. Koike

・Possible bulk inhomogeneity of superconductivity in Y_1-xCa_xBa₂Cu₃O_7-δ (x = 0 - 0.2)
　Physica C 470 (2010) S199.
　S. Chamura, T. Adachi, Y. Tanabe and Y. Koike

・Pseudogap phase boundary in overdoped Bi₂Sr₂CaCu₂O_8+δ studied by measuring out-of-plane resistivity under the magnetic fields
　Physica C 470 (2010) S153.
　K. Murata, H. Kushibiki, T. Watanabe, K. Kudo, T. Nishizaki, N. Kobayashi, K. Yamada, T. Noji and Y. Koike

・Temperature dependence of the electronic structure of Sr₁₄Cu₂₄O₄₁ studied by resonant inelastic X-ray scattering
　Physica C 470 (2010) S145.
　M. Yoshida, K. Ishii, K. Ikeuchi, I. Jarrige, Y. Murakami, J. Mizuki, K. Tsutsui, T. Tohyama, S. Maekawa, K. Kudo, Y. Koike and Y. Endoh

・Hole-trapping and Kondo effect in Ni-substituted La_2-xSr_xCu_1-yNi_yO₄ with x = 0.08 - 0.30
　Physica C 470 (2010) S57.
　K. Suzuki, Y. Tanabe, T. Adachi and Y. Koike

・Muon Knight shift study of pseudogap state in underdoped (Bi,Pb)2201
　Physica C 470 (2010) S55.
　M. Miyazaki, R. Kadono, M. Hiraishi, K. H. Satoh, S. Takeshita, A. Koda, Y. Fukunaga, Y. Tanabe, T. Adachi and Y. Koike

・Low-temperature synthesis of the infinite-layer compound LaNiO₂ by soft-chemical techniques
　Japanese Journal of Applied Physics 49 (2010) 093101.
　T. Takamatsu, M. Kato, T. Noji and Y. Koike

・Temperature dependence of the second magnetization peak in underdoped La_2-xSr_xCuO₄ single crystals
　Physical Review B 82 (2010) 064520.
　L. Miu, T. Adachi, K. Omori, Y. Koike and D. Miu

・Hole trapping by Ni, Kondo effect, and electronic phase diagram in nonsuperconducting Ni-substituted La_2-xSr_xCu_1-yNi_yO₄
　Physical Review B 82 (2010) 054519.
　K. Suzuki, T. Adachi, Y. Tanabe, Y. Koike, T. Kawamata, Risdiana, T. Suzuki and I. Watanabe

・Growth, annealing effects on superconducting and magnetic properties, and anisotropy of FeSe_1-xTe_x (0.5≦x≦1) single crystals
　Journal of the Physical Society of Japan 79 (2010) 084711.
　T. Noji, T. Suzuki, H. Abe, T. Adachi, M. Kato and Y. Koike

・Muon spin relaxation study of the Cu spin dynamics in electron-doped high-T_c superconductor Pr_0.86LaCe_0.14Cu_1-yZn_yO₄
　Physical Review B 82 (2010) 014506.
　Risdiana, T. Adachi, N. Oki, Y. Koike, T. Suzuki and I. Watanabe

・Incommensurate spin correlations induced by magnetic Fe ions substituted into overdoped Bi_1.75Pb_0.35Sr_1.90CuO_6+z
　Physical Review B 81 (2010) 144501.
　H. Hiraka, Y. Hayashi, S. Wakimoto, M. Takeda, K. Kakurai, T. Adachi, Y. Koike, I. Yamada, M. Miyazaki, M. Hiraishi, S. Takeshita, A. Koda, R. Kadono, J.M. Tranquada and K. Yamada

・X-ray diffraction study of spontaneous strain in superconducting Ba_0.6K_0.4BiO₃
　Solid State Communications 150 (2010) 711.
　H. Fujishita, T. Yamada, S. Nakada, H. Okamoto, S. Shitara, M. Kato and Y. Koike

・Thermal conductivity of the quasi one-dimensional spin system Sr₂V₃O₉
　Journal of Physics: Conference Series 200 (2010) 022068.
　M. Uesaka, T. Kawamata, N. Kaneko, M. Sato, K. Kudo, N. Kobayashi and Y. Koike

・Thermal conductivity in the Bose-Einstein condensed state of triplons in the bond-alternating spin-chain system Pb₂V₃O₉
　Journal of Physics: Conference Series 200 (2010) 022054.
　M. Sato, T. Kawamata, N. Sugawara, N. Kaneko, M. Uesaka, K. Kudo, N. Kobayashi and Y. Koike

・Enhancement of thermal conductivity due to spinons in the one-dimensional spin system SrCuO₂
　Journal of Physics: Conference Series 200 (2010) 022023.
　T. Kawamata, N. Kaneko, M. Uesaka, M. Sato and Y. Koike

・Change of the ground state upon hole doping unveiled by Ni impurity in high-T_c cuprates
　Journal of the Physical Society of Japan 79 (2010) 023706.
　Y. Tanabe, K. Suzuki, T. Adachi, Y. Koike, T. Kawamata, Risdiana, T. Suzuki and I. Watanabe

・A new intercalation superconductor Mg_x(PC)_yZrNCl
　Japanese Journal of Applied Physics 49 (2010) 020210.
　H. Tezuka, M. Kato, T. Noji, S. Yamanaka and Y. Koike

【2009年】

・Magnetic-susceptibility and specific-heat studies on the inhomogeneity of superconductivity in the underdoped La_2-xSr_xCuO₄
　Journal of the Physical Society of Japan 78 (2009) 114707.
　T. Adachi, K. Omori, Y. Tanabe and Y. Koike

・Charge excitations in the stripe-ordered La_5/3Sr_1/3NiO₄ and La_2-x(Ba,Sr)_xCuO₄ superconducting compounds
　Physical Review Letters 102 (2009) 157001.
　S. Wakimoto, H. Kimura, K. Ishii, K. Ikeuchi, T. Adachi, M. Fujita, K. Kakurai, Y. Koike, J. Mizuki, Y. Noda, K. Yamada, A. H. Said and Yu. Shvyd'ko

・Anomalous enhancement of vortex pinning and microscopic phase separation in the overdoped regime of La_2-xSr_xCuO₄
　Journal of Physics: Conference Series 150 (2009) 052266.
　Y. Tanabe, T. Adachi, H. Sato, K. Omori and Y. Koike

・Thermal-conductivity study on the electronic state in the overdoped regime of La_2-xSr_xCuO₄: Phase separation and anomaly at x ~ 0.21
　Journal of Physics: Conference Series 150 (2009) 052115.
　T. Adachi, S. M. Haidar, T. Kawamata, N. Sugawara, N. Kaneko, M. Uesaka, H. Sato, Y. Tanabe, T. Noji, K. Kudo, N. Kobayashi and Y. Koike

・Rapid low-temperature synthesis of superconducting (Ba,Rb)BiO₃ using molten RbOH
　Journal of Physics: Conference Series 150 (2009) 052100.
　M. Kato, S. Shitara, T. Minakawa, T. Noji and Y. Koike

・Possible inhomogeneity of superconductivity in (Y,Ca)Ba₂Cu₃O_7-δ probed by magnetic susceptibility and specific heat
　Journal of Physics: Conference Series 150 (2009) 052032.
　S. Chamura, T. Adachi, Y. Tanabe and Y. Koike

・High-field and high-pressure ESR measurements of SrCu₂(BO₃)₂
　Journal of Physics: Conference Series 150 (2009) 042171.
　T. Sakurai, M. Tomoo, S. Okubo, H. Ohta, K. Kudo and Y. Koike

・Single-crystal growth of Pb₂V₃O₉ and the Bose-Einstein condensed state of triplons studied by thermal conductivity, specific heat and magnetization measurements
　Journal of Physics: Conference Series 150 (2009) 042087.
　T. Kawamata, N. Sugawara, M. Uesaka, N. Kaneko, T. Kajiwara, H. Yamane, K. Koyama, K. Kudo, N. Kobayashi and Y. Koike

・Ni-substitution effects on Cu-spin correlation in La_2-xSr_xCu_1-yNi_yO₄ relating to hole trapping and stripe pinning
　Physica B 404 (2009) 717.
　Y. Tanabe, T. Adachi, Risdiana, T. Kawamata, T. Suzuki, I. Watanabe and Y. Koike

・μSR study on superconductivity and magnetism in high-T_c superconducting oxides
　Nuclear Instruments and Methods in Physics Research A 600 (2009) 223.
　Y. Koike

・Independent control of low-energy resonant states and polaron states by the Zn-doping and the structural transition in La_2-xSr_xCuO₄ and La_2-xBa_xCuO₄ (x = 0.11)
　Journal of Superconductivity and Novel Magnetism 22 (2009) 313.
　S. Sugai, T. Adachi, K. Sugiura, T. Takahashi, K. Obara, Y. Takayanagi and Y. Koike

・Enhancement of electronic anomalies in iron-substituted La_2-xSr_xCu_1-yFe_yO₄ around x = 0.22
　Journal of the Physical Society of Japan 78 (2009) 025002.
　T. Adachi, H. Sato, M. Fujita, K. Yamada and Y. Koike

・Energy gaps in the failed high-T_c superconductor La_1.875Ba_0.125CuO₄
　Nature Physics 5 (2009) 119.
　R.-H. He, K. Tanaka, S.-K. Mo, T. Sasagawa, M. Fujita, T. Adachi, N. Mannella, K. Yamada, Y. Koike, Z. Hussain and Z.-X. Shen

・Rapid low-temperature synthesis of superconducting (Ba,K)BiO₃ using molten KOH
　Japanese Journal of Applied Physics 48 (2009) 010214.
　M. Kato, S. Shitara, K. Nemoto, T. Minakawa, T. Noji and Y. Koike

・Anomalous criticality in the electrical resistivity of La_2-xSr_xCuO₄
　Science 323 (2009) 603.
　R.A. Cooper, Y. Wang, B. Vignolle, O.J. Lipscombe, S.M. Hayden, Y. Tanabe, T. Adachi, Y. Koike, M. Nohara, H. Takagi, C. Proust and N.E. Hussey

【2008年】

・Change of the dynamics of internal fields in the normal state of La_2-xSr_xCuO₄ observed by muon-spin-relaxation
　Journal of the Physical Society of Japan 77 (2008) 124716.
　I. Watanabe, T. Adachi, S. Yairi, Y. Koike and K. Nagamine

・Inhomogeneous superconducting state in the overdoped regime of La_2-xSr_xCuO₄: Comparison with the superconducting state of NbSe₂
　Journal of Physics and Chemistry of Solids 69 (2008) 3217.
　Y. Tanabe, T. Adachi, K. Omori, H. Sato, T. Noji and Y. Koike

・Effects of Zn and Ni substitution on the Cu spin dynamics and superconductivity in La_2-xSr_xCu_1-y(Zn,Ni)_yO₄ (x = 0.15 - 0.20): Muon spin relaxation and magnetic susceptibility study
　Physical Review B 78 (2008) 134515.
　T. Adachi, N. Oki, Risdiana, S. Yairi, Y. Koike and I. Watanabe

・Search for new superconductors by the Li-intercalation into layered perovskites of the Aurivillius phase
　Physica C 468 (2008) 1152.
　H. Tezuka, M. Kato, T. Kajita, T. Noji and Y. Koike

・Low-temperature synthesis of (Ba,K,Rb)BiO₃ using molten hydroxides
　Physica C 468 (2008) 1132.
　T. Minakawa, M. Kato, T. Noji and Y. Koike

・アルカリ金属水酸化物溶融塩を用いた酸化物超伝導体の低温合成
　固体物理 43 (2008) 507.
　今井良宗，加藤雅恒，小池洋二

・Anomalous behavior of the second magnetization peak in La_1.81Sr_0.19CuO₄ single crystals: Possible influence of two-band superconductivity
　Physical Review B 78 (2008) 024520.
　L. Miu, Y. Tanabe, T. Adachi, Y. Koike, D. Miu, G. Jakob and H. Adrian

・Charge and magnetic orderings in the triangular-lattice antiferromagnet InFe₂O₄
　Journal of the Physical Society of Japan 77 (2008) 064803.
　K. Oka, M. Azuma, N. Hayashi, S. Muranaka, Y. Narumi, K. Kindo, S. Ayukawa, M. Kato, Y. Koike, Y. Shimakawa and M. Takano

・低次元量子スピン系物質におけるスピンによる熱伝導
　応用物理 77 (2008) No. 5, 525.
　川股隆行，小池洋二

・NMR study on the local structure in La-based high-T_c cuprates
　Journal of Physics: Conference Series 108 (2008) 012007.
　T. Goto, J. Tonishi, T. Suzuki, A. Oosawa, M. Fujita, K. Yamada, T. Adachi and Y. Koike

・Precise measuremnets of the dynamics of local fields in the underdoped regime of La_2-xSr_xCuO₄ by μSR
　Journal of Physics: Conference Series 108 (2008) 012004.
　I. Watanabe, T. Adachi, S. Yairi, Y. Koike and K. Nagamine

・Inhomogeneous superconductivity in both underdoped and overdoped regimes of high-T_c cuprates
　Journal of Physics: Conference Series 108 (2008) 012003.
　Y. Koike, T. Adachi, Y. Tanabe, K. Omori, T. Noji and H. Sato

・Evidence for ballistic thermal conduction in the one-dimensional S = 1/2 Heisenberg antiferromagnetic spin system Sr₂CuO₃
　Journal of the Physical Society of Japan 77 (2008) 034607.
　T. Kawamata, N. Takahashi, T. Adachi, T. Noji, K. Kudo, N. Kobayashi and Y. Koike

・Electrical properties of layered perovskite-type palladium oxides
　Materials Science and Engineering B 148 (2008) 65.
　S. Ayukawa, M. Kato, T. Noji and Y. Koike

・Synthesis of oxide superconductors by soft-chemical techniques
　Materials Science and Engineering B 148 (2008) 53.
　M. Kato, Y. Imai, T. Kajita, Y. Takarabe, T. Minakawa, K. Nemoto, H. Tezuka, T. Noji and Y. Koike

・Cu spin dynamics in the overdoped regime of La_2-xSr_xCu_1-yZn_yO₄ probed by muon spin relaxation
　Physical Review B 77 (2008) 054516.
　Risdiana, T. Adachi, N. Oki, S. Yairi, Y. Tanabe, K. Omori, Y. Koike, T. Suzuki, I. Watanabe, A. Koda and W. Higemoto

【2007年】

・Magnetic-field-induced enhancement of the vortex pinning in the overdoped regime of La_2-xSr_xCuO₄: Relation to the microscopic phase separation
　Journal of the Physical Society of Japan 76 (2007) 113706.
　Y. Tanabe, T. Adachi, K. Omori, H. Sato, T. Noji and Y. Koike

・酸化物高温超伝導のμSR
　原子核研究 52 (2007) Suppl. 2, 22.
　小池洋二

・Weak-coupling d-wave BCS superconductivity and unpaired electrons in overdoped La_2-xSr_xCuO₄ single crystals
　Physical Review B 76 (2007) 064512.
　Y. Wang, J. Yan, L. Shan, H.-H. Wen, Y. Tanabe, T. Adachi and Y.Koike

・Possible phase separation in the underdoped La_2-xSr_xCuO₄ studied by the magnetic susceptibility
　Physica C 460-462 (2007) 1184.
　K. Omori, T. Adachi, Y. Tanabe and Y. Koike

・Relationship between Cu-spin fluctuation and superconductivity in La_2-xSr_xCu_1-y(Zn,Ni)_yO₄ studied by the μSR and magnetic-susceptibility
　Physica C 460-462 (2007) 1172.
　T. Adachi, N. Oki, Risdiana, S. Yairi, Y. Koike and I. Watanabe

・μSR study of effects of rare-earth moments on the 1/8 anomaly in the excess-oxygen-doped high-T_c cuprates La_2-xA_xCuO_4+δ (A = Eu, Pr)
　Physica C 460-462 (2007) 1169.
　T. Adachi, Y. Koike, Risdiana, N. Oki, H. Mikuni, I. Watanabe and F.L. Pratt

・μSR study of impurity effects on the Cu-spin fluctuations in the overdoped regime of La_2-xSr_xCu_1-yZn_yO₄
　Physica C 460-462 (2007) 874.
　Risdiana, T. Adachi, N. Oki, S. Yairi, Y. Tanabe, K. Omori, T. Suzuki, I. Watanabe, A. Koda, W. Higemoto and Y. Koike

・Low-temperature synthesis of (La,Sm)₂CuO₄ with the T'-structure from molten hydroxides
　Physica C 460-462 (2007) 395.
　Y. Imai, M. Kato, Y. Takarabe, T. Noji, T. Adachi and Y. Koike

・Possible microscopic phase separation in the overdoped regime of La_2-xSr_xCuO₄ studied by the magnetic susceptibility and electrical resistivity
　Physica C 460-462 (2007) 376.
　Y. Tanabe, T. Adachi, K. Omori, H. Sato and Y. Koike

・Low-temperature synthesis of La₂CuO₄ with the T'-structure from molten hydroxides
　Chemistry of Materials 19 (2007) 3584.
　Y. Imai, M. Kato, Y. Takarabe, T. Noji and Y. Koike

・Momentum-dependent charge excitations of a two-leg ladder: Resonant inelastic x-ray scattering of (La,Sr,Ca)₁₄Cu₂₄O₄₁
　Physical Review B 76 (2007) 045124.
　K. Ishii, K. Tsutsui, T. Tohyama, T. Inami, J. Mizuki, Y. Murakami, Y. Endoh, S. Maekawa, K. Kudo, Y. Koike and K. Kumagai

・Successive superconducting transition in Ta₂S₂C studied by the electrical resistivity and nonlinear ac magnetic susceptibility
　Physical Review B 75 (2007) 184536.
　M. Suzuki, I.S. Suzuki, T. Noji, Y. Koike and J. Walter

・Large thermal conductivity due to spins in the Haldane gap system Y₂BaNiO₅
　Journal of Magnetism and Magnetic Materials 310 (2007) 1212.
　T. Kawamata, Y. Miyajima, N. Takahashi, T. Noji and Y. Koike

 

【2006年】

・Magnetic field-effect on static stpin correlation in stripe ordered phase of La_2-xBa_xCuO₄
　Journal of Physics: Conference Series 51 (2006) 510.
　M. Fujita, M. Matsuda, H. Goka, T. Adachi, Y. Koike and K. Yamada

・Local structure in signle crystals of La-based high T_c cuprates
　Journal of Physics: Conference Series 51 (2006) 275.
　J. Tonishi, M. Ueda, T. Suzuki, A. Oosawa, T. Goto, T. Adachi, Y. Koike, M. Fujita and K. Yamada

・Magnetic-field effects on the charge-spin stripe order in La-214 high-T_c cuprates
　Journal of Physics: Conference Series 51 (2006) 259.
　T. Adachi, K. Omori, T. Kawamata, K. Kudo, T. Sasaki, N. Kobayashi and Y. Koike

・Resonant two-phonon Raman scattering as a probe of hole crystal formation in Sr_14-xCa_xCu₂₄O₄₁
　Physical Review B 74 (2006) 134502.
　J. Holmlund, J. Andreasson, C. S. Knee, J. Backstrom, M. Kall, M. Osada, T. Noji, Y. Koike, M. Kakihana and M. Borjesson

・Evidence for ballistic thermal conduction in the one-dimensional spin system Sr₂CuO₃
　AIP Conference Proceedings 850 (2006) 1265.
　N. Takahashi, T. Kawamata, T. Adachi, T. Noji, Y. Koike, K. Kudo and N. Kobayashi

・Cu-NMR/NQR studies of spin gap in the edge-sharing CuO₂ chains of Ca_2+xY_2-xCu₅O₁₀
　AIP Conference Proceedings 850 (2006) 1021.
　K. Kumagai, K. Yoshimitsu, A. Shimamura, K. Kudo, S. Kurogi and Y. Koike

・Single-crystal growth of the superconducting Ba_1-xK_xBiO₃ by the floating-zone method
　AIP Conference Proceedings 850 (2006) 671.
　T. Noji, T. Kato, Y. Imai and Y. Koike

・Electrochemical synthesis of the perovskite Ba_1-xCs_xBiO₃ from molten salts
　AIP Conference Proceedings 850 (2006) 669.
　Y. Imai, M. Kato, T. Noji and Y. Koike

・Growth of the single crystal BaBiO₃ by the floating-zone method
　AIP Conference Proceedings 850 (2006) 667.
　Y. Imai, T. Noji, M. Kato and Y. Koike

・Synthesis of new electron-doped cuprates Li_xSr₂CuO₂X₂ (X = Cl, Br, I)
　AIP Conference Proceedings 850 (2006) 535.
　T. Kajita, M. Kato, T. Noji and Y. Koike

・Crystal growth of superconducting La2126 without HIP treatment
　AIP Conference Proceedings 850 (2006) 503.
　K. Koike, T. Noji, T. Adachi and Y. Koike

・Field-induced magnetic order and thermal conductivity in La_2-xBa_xCuO₄
　AIP Conference Proceedings 850 (2006) 431.
　T. Kawamata, N. Tanakashi, M. Yamazaki, T. Adachi, T. Manabe, T. Noji, Y. Koike, K. Kudo and N. Kobayashi

・In-plane electrical resistivity under strong magnetic fields up to 27 T in La_2-xBa_xCuO₄ and La_2-xSr_xCuO₄ around x = 1/8
　AIP Conference Proceedings 850 (2006) 429.
　T. Adachi, T. Kawamata, Y. Koike, K. Kudo, T. Sasaki and N. Kobayashi

・Buckling of the CuO₂ plane in single crystals of La-based high-T_c cuprates observed by NMR
　AIP Conference Proceedings 850 (2006) 421.
　T. Goto, M. Ueda, H. Sumikawa, T. Suzuki, M. Fujita, K. Yamada, T. Adachi and Y. Koike

・Correlated decrease between the superconducting volume fraction and T_c and possible phase separation in the overdoped regime of La_2-xSr_xCuO₄
　AIP Conference Proceedings 850 (2006) 419.
　Y. Tanabe, T. Adachi, T. Noji, H. Sato and Y. Koike

・Search for new superconductors by the Li-intercalation into layered perovskites
　Physica C 445-448 (2006) 26.
　M. Kato, T. Kajita, R. Hanakago and Y. Koike

・Possible phase separation in the overdoped regime of La_2-xSr_xCuO₄
　Physica C 445-448 (2006) 14.
　T. Adachi, Y. Tanabe, T. Noji, H. Sato and Y. Koike

・高温超伝導の理解はどこまで進んだか？
　まてりあ 45 (2006) No. 7, 527 & No. 8, 592.
　小池洋二

・Muon spin relaxation study of the anomalous magnetic behavior in excess-oxygen-doped La_1.8Nd_0.2CuO_4+δ (0.020≦δ≦0.101)
　Physical Review B 73 (2006) 134506.
　I. Watanabe, N. Oki, T. Adachi, H. Mikuni, Y. Koike, F.L. Pratt and K. Nagamine

・μSR study of the Cu-spin dynamics in the electron-doped high-T_c cuprate of Pr_0.86LaCe_0.14Cu_1-y(Zn, Ni)_yO₄
　Physica B 374-375 (2006) 218.
　Risdiana, T. Adachi, Y. Koike and I. Watanabe

 

【2005年】

・Superconducting volume fraction in overdoped regime of La_2-xSr_xCuO₄: Implication for phase separation from magnetic-susceptibility measurement
　Journal of the Physical Society of Japan 74 (2005) 2893.
　Y. Tanabe, T. Adachi, T. Noji and Y. Koike

・Synthesis of new electron-doped cuprates Li_xSr₂CuO₂X₂ (X = Cl, Br)
　Physica C 426-431 (2005) 500.
　T. Kajita, M. Kato, T. Suzuki, T. Itoh, T. Noji and Y. Koike

・Electrical resistivity of the perovskite Ba_1-xK_xBiO₃ (x≦0.15) under high pressure
　Physica C 426-431 (2005) 497.
　Y. Imai, M. Kato, T. Noji, Y. Koike, M. Hedo, Y. Uwatoko and N. Mori

・Field-induced magnetic order and thermal conductivity in La_1.87Sr_0.13Cu_1-yM_yO₄ (M = Zn, Ni)
　Physica C 426-431 (2005) 469.
　T. Kawamata, M. Yamazaki, N. Takahashi, T. Adachi, T. Noji, Y. Koike, K. Kudo and N. Kobayashi

・Absence of the impurity-induced magnetic order in the electron-doped high-T_c cuprates Pr_0.86LaCe_0.14Cu_1-y(Zn, Ni)_yO₄
　Physica C 426-431 (2005) 355.
　Risdiana, T. Adachi, Y. Koike, I. Watanabe and K. Nagamine

・Neutron scattering study on stripe correlations in La_2-xBa_xCuO₄
　Physica C 426-431 (2005) 257.
　M. Fujita, H. Goka, T. Adachi, Y. Koike, K. Yamada

・μSR and thermal conductivity studies on inhomogeneity of the impurity- and field-induced magnetism and superconductivity in high-T_c cuprates
　Physica C 426-431 (2005) 189.
　Y. Koike, T. Adachi, N. Oki, Risdiana, M. Yamazaki, T. Kawamata, T. Noji, K. Kudo, N. Kobayashi, I. Watanabe and K. Nagamine

・Origin of experimental order-disorder transition line curvature in the La_2-xSr_xCuO₄ single crystal vortex system at low temperatures
　Physical Review B 72 (2005) 052513.
　L. Miu, T. Adachi, Y. Koike, D. Miu, S. Diaz and G. Chouteau

・Magnetic-field effects on the in-plane electrical resistivity in single-crystal La_2-xBa_xCuO₄ and La_1.6-xNd_0.4Sr_xCuO₄ around x = 1/8: Implication for the field-induced stripe order
　Physical Review B 71 (2005) 104516.
　T. Adachi, N. Kitajima, T. Manabe, Y. Koike, K. Kudo, T. Sasaki and N. Kobayashi

・Effects of hole doping on magnetic ground and excited states in the edge-sharing CuO₂ chains of Ca_2+xY_2-xCu₅O₁₀
　Physical Review B 71 (2005) 104414.
　M. Matsuda, K. Kakurai, S. Kurogi, K. Kudo, Y. Koike, H. Yamaguchi, T. Ito and K. Oka

・Single-crystal growth and the dependence on hole concentration and magnetic field of the magnetic ground state in the edge-sharing CuO₂ chain system Ca_2+xY_2-xCu₅O₁₀
　Physical Review B 71 (2005) 104413.
　K. Kudo, S. Kurogi, Y. Koike, T. Nishizaki and N. Kobayashi

・Field-induced and impurity-induced magnetic order in La_2-xSr_xCuO₄ studied by the thermal conductivity and μSR
　International Journal of Modern Physics B 19, Nos. 1, 2 & 3 (2005) 181.
　Y. Koike, M. Yamazaki, T. Kawamata, N. Takahashi, N. Oki, S. Yairi, T. Adachi, T. Noji, K. Kudo, T. Nishizaki, N. Kobayashi, I. Watanabe and K. Nagamine

 

【2004年】

・Multi-triplet magnons in SrCu₂(BO₃)₂ studied by thermal conductivity measurements in magnetic fields
　Journal of the Physical Society of Japan 73 (2004) 3497.
　K. Kudo, T. Noji, Y. Koike, T. Nishizaki and N. Kobayashi

・Nonmonotonic temperature dependence of the experimentally determined vortex-creep activation energy in disordered high-temperature superconductors
　Physical Review B 70 (2004) 134523.
　L. Miu, S. Popa, T. Noji, Y. Koike, D. Miu, S. Diaz and G. Chouteau

・New electron-doped superconducting cuprate Li_xSr₂CuO₂Br₂
　Japanese Journal of Applied Physics 43 (2004) L1480.
　T. Kajita, M. Kato, T. Suzuki, T. Itoh, T. Noji and Y. Koike

・Drastic enhancement of thermal conductivity in the Bose-Einstein condensed state of TlCuCl₃
　Journal of the Physical Society of Japan 73 (2004) 2358.
　K. Kudo, M. Yamazaki, T. Kawamata, T. Noji, Y. Koike, T. Nishizaki, N. Kobayashi and H. Tanaka

・Muon-spin-relaxation and magnetic-susceptibility studies of the effects of the magnetic impurity Ni on the Cu-spin dynamics and superconductivity in La_2-xSr_xCu_1-yNi_yO₄ with x = 0.13
　Physical Review B 70 (2004) 060504(R).
　T. Adachi, S. Yairi, Y. Koike, I. Watanabe and K. Nagamine

・Field-induced magnetic order in La_2-xSr_xCuO₄ (x = 0.10, 0.115, 0.13) studied by in-plane thermal conductivity measurements
　Physical Review B 70 (2004) 014503.
　K. Kudo, M. Yamazaki, T. Kawamata, T. Adachi, T. Noji, Y. Koike, T. Nishizaki and N. Kobayashi

・Thermal conductivity in the Bose-Einstein condensed state of TlCuCl₃
　Journal of Magnetism and Magnetic Materials 272-276 (2004) 214.
　K. Kudo, M. Yamazaki, T. Kawamata, T. Noji, Y. Koike, T. Nishizaki, N. Kobayashi and H. Tanaka

・Magnon thermal conductivity in the spin-gap state and the antiferromagnetically ordered state of low-dimansional copper oxides
　Journal of Magnetism and Magnetic Materials 272-276 (2004) 94.
　K. Kudo, Y. Koike, S. Kurogi, T. Noji, T. Nishizaki and N. Kobayashi

・Precise muon-spin-relaxation measurements on the Cu-spin dynamics in La_2-xSr_xCuO₄
　Journal of Magnetism and Magnetic Materials 272-276 (2004) e1061.
　I. Watanabe, T. Adachi, S. Yairi, Y. Koike and K. Nagamine

・Muon spin relaxation and magnetic susceptibility studies of the effects of nonmagnetic impurities on the Cu-spin dynamics and superconductivity in La_2-xSr_xCu_1-yZn_yO₄ around x = 0.115
　Physical Review B 69 (2004) 184507.
　T. Adachi, S. Yairi, K. Takahashi, Y. Koike, I. Watanabe and K. Nagamine

　

【2003年】

・低次元量子スピン系の熱伝導
　固体物理 38 (2003) 35.
　工藤一貴，小池洋二

・Single-crystal growth and thermal conductivity of the four-leg spin-ladder system La₂Cu₂O₅
　Journal of the Physical Society of Japan 72 (2003) 2551.
　K. Kudo, T. Noji, Y. koike, T. Nishizaki and N. Kobayashi

・1/8 anomaly in the excess-oxygen-doped La_1.8Nd_0.2Cu_1-yZn_yO_4+δ
　Physical Review B 68 (2003) 024524.
　H. Mikuni, T. Adachi, S. Yairi, M. Kato, Y. Koike, I. Watanabe, and K. Nagamine

・Zn-substitution effects on the thermal conductivity of the two-dimensional spin-gap system SrCu₂(BO₃)₂ and the two-dimensional antifferomagnetic system Cu₃B₂O₆ single-crystals
　Physica B 329-333 (2003) 910.
　K. Kudo, T. Noji, Y. Koike, T. Nishizaki and N. Kobayashi

・Synthesis of the electron-doped bismuth oxide (Ba_0.6Bi_0.4)BiO_3-x
　Physica C 388-389 (2003) 449.
　Y. Imai, M. Kato, Y. Koike and Arthur W. Sleight

・Superconductivity in electrochemically Li-intercalated niobates with layered perovskite structure
　Physica C 388-389 (2003) 445.
　M. Kato, A. Inoue, I. Nagai, K. Kakihana, A.W. Sleight and Y. Koike

・Effect of non-magnetic impurities on the Cu-spin dynamics and superconductivity in La_2-xSr_xCu_1-yZn_yO₄ around x = 0.115
　Journal of Low Temperature Physics 131 (2003) 843.
　T. Adachi, I. Watanabe, S. Yairi, K. Takahashi, Y. Koike and K. Nagamine

・1/8 anomaly in the excess-oxygen-doped La_2-xA_xCuO_4+δ (A = Nd, Bi, Pr)
　Journal of Low Temperature Physics 131 (2003) 837.
　Y. Koike, H. Mikuni, I. Watanabe, T. Adachi, S. Yairi and K. Nagamine

・Thermal conductivity of the four-leg spin-ladder system La₂Cu₂O₅ single crystal
　Journal of Low Temperature Physics 131 (2003) 725.
　K. Kudo, T. Noji, Y. Koike, T. Nishizaki and N. Kobayashi

・Single-crystal growth and anisotropy of the tetragonal 1-2-3 type superconductor Ca_0.5La_1.25Ba_1.25Cu₃O_y
　Journal of Low Temperature Physics 131 (2003) 699.
　T. Noji, H. Akagawa, Y. Ono and Y. Koike

・Antifferomagnetic ordering in the one-dimensional edge-sharing CuO₂ chain system Ca_2+xY_2-xCu₅O₁₀
　Journal of Low Temperature Physics 131 (2003) 353.
　S. Kurogi, K. Kudo, T. Noji, Y. Koike, T. Nishizaki and N. Kobayashi

・μSR study on slowing-down behavior of the Cu-spin fluctuations at high temperatures in La_2-xSr_xCuO₄ single crystal
　Journal of Low Temperature Physics 131 (2003) 331.
　I. Watanabe, T. Adachi, S. Yairi, H. Mikuni, Y. Koike and K. Nagamine

・In-plane anisotropy of the upper critical field of La_2-xSr_xCuO₄ in the underdoped and overdoped regimes
　Journal of Low Temperature Physics 131 (2003) 293.
　M. Sato, T. Noji, T. Adachi, T. Kawamata, H. Akagawa and Y. Koike

・Anisotropic magnetic properties and anomalous thermal conductivity in the bc plane of the quasi-two-dimensional spin system Cu₃B₂O₆: Relation between the thermal conductivity and the spin state in magnetic fields
　Journal of the Physical Society of Japan 72 (2003) 569.
　K. Kudo, T. Noji, Y. Koike, T. Sakon, M. Motokawa, T. Nishizaki and N. Kobayashi

・Dynamics of the stripes in La_2-xSr_xCu_1-yZn_yO₄ around x = 0.115 studied by μSR
　Physica B 326 (2003) 305.
　I. Watanabe, T. Adachi, S. Yairi, Y. Koike and K. Nagamine

　

【2002年】

・Static spin correlations induced by Zn doping in La_1.79Sr_0.21Cu_1-yZn_yO₄ (y = 0, 0.01)
　Applied Physics A 74 (Suppl.) (2002) S649.
　H. Kimura, K. Hirota, M. Aoyama, Y. Koike, K. Yamada, Y. Endoh, N. Aso and T. Takeuchi

・Muon-spin-ralaxation study of the effect of non-mgnetic impurities on the Cu-spin fluctuations in La_2-xSr_xCu_1-yZn_yO₄ around x = 0.115
　Physical Review B 65 (2002) 180516(R).
　I. Watanabe, T. Adachi, K. Takahashi, S. Yairi, Y. Koike and K. Nagamine

・Superconductivity of Li-intercalated compounds Li_xAB₂Nb₃O₁₀ (A = K, Rb, Cs; B = Ca, Sr) by electrochemical technique
　submitted to Applied Physics Letters.
　I. Nagai, M. Kato, Y. Koike and M. Kakihana

・Transport properties of the single-crystal La_2-xBa_xCuO₄ (0≦x≦0.11)
　Journal of Physics and Chemistry of Solids 63 (2002) 1097.
　T. Adachi, T. Noji and Y. Koike

・μSR study of the Cu-spin dynamics in La_2-xSr_xCu_1-yZn_yO₄
　Journal of Physics and Chemistry of Solids 63 (2002) 1093.
　I. Watanabe, T. Adachi, K. Takahashi, S. Yairi, Y. Koike and K. Nagamine

・Synthesis and superconducting properties of Li-intercalated niobium oxide Li_xAB₂Nb₃O₁₀ (A: alkaline metal, B: alkaline earth metal) by electrochemical technique
　Solid State Ionics 151 (2002) 265.
　I. Nagai, Y. Abe, M. Kato, Y. Koike and M. Kakihana

・Bi 系・Y 系高温超伝導体における 1/8 異常とストライプ
　固体物理 37 (2002) 169.
　阿子島めぐみ，小池洋二，渡邊功雄

　

【2001年】

・複合金属水酸化物前駆体法による銅酸化物 A-Cu-O （A: アルカリ土類金属）の低温合成
　固体物理 36 (2001) 777.
　長井一郎，加藤雅恒，小池洋二

・Crystal growth, transport properties and crystal structure of the single-crystal La_2-xBa_xCuO₄ (x = 0.11)
　Physical Review B 64 (2001) 144524.
　T. Adachi, T. Noji and Y. Koike

・Possible stripe ordering at x = 0.21 in La_2-xSr_xCu_1-yZn_yO₄
　Physica C 364-365 (2001) 562.
　Y. Koike, M. Aoyama, T. Adachi, M. Akoshima, T. Kawamata, I. Watanabe, S. Ohira, W. Higemoto, K. Nagamine, H. Kimura, K. Hirota, K. Yamada and Y. Endoh

・Thermal conductivity of the two-dimensional spin-gap system SrCu₂(BO₃)₂ in magnetic fields
　Journal of the Physical Society of Japan 70 (2001) 1448.
　K. Kudo, T. Noji, Y. Koike, T. Nishizaki and N. Kobayashi

・Antiferromagnetic ordering in the single-crystal Cu₃B₂O₆
　Journal of the Physical Society of Japan 70 (2001) 935.
　K. Kudo, T. Noji and Y. Koike

・Electrochemical intercalation of lithium in layered niobates AB₂Nb₃O₁₀ (A = K, Rb, Cs; B = Ca, Sr) and their superconductivity
　Physica C 357-360 (2001) 393.
　I. Nagai, Y. Abe, M. Kato, Y. Koike and M. Kakihana

・Cu-site-substitution effects on the 1/8 anomaly in the high-T_c suprates and on the anomaly at x = 0.21 in La_2-xSr_xCuO₄
　Physica C 357-360 (2001) 82.
　Y. Koike, M. Akoshima, M. Aoyama, K. Nishimaki, T. Kawamata, T. Adachi, T. Noji, M. Kato, I. Watanabe, S. Ohira, W. Higemoto, K. Nagamine, H. Kimura, K. Hirota, K. Yamada and Y. Endoh

・Spin gap and hole pairing in the spin-ladder cuprate Sr_14-xA_xCu₂₄O₄₁ (A = Ca and La) studied by the thermal conductivity
　Journal of the Physical Society of Japan 70 (2001) 437.
　K. Kudo, S. Ishikawa, T. Noji, T. Adachi, Y. Koike, K. Maki, S. Tsuji and K. Kumagai

・Spin gap of Sr_14-xA_xCu_24-yZn_yO₄₁ (A = Ca, La: M = Zn, Ni) studied by thermal conductivity
　Journal of Physics and Chemistry of Solids 62 (2001) 361.
　K. Kudo, Y. Koike, K. Maki, S. Tsuji and K. Kumagai

・Neutron-scattering study of incommensurate elastic magnetic peaks in La_2-xSr_xCu_1-yZn_yO₄ (x ~ 0.21, y ~ 0.01)
　Journal of the Physical Society of Japan 70, Suppl. A (2001) 52.
　H. Kimura, K. Hirota, M. Aoyama, T. Adachi, T. Kawamata, Y. Koike, K. Yamada and Y. Endoh

・Impurity effects on the stripes in La-214, Bi-2212 and Y-123 phases
　AIP Conference Proceedings (Melville, NY, 2001) 554 (2001) 202.
　Y. Koike, M. Akoshima, M. Aoyama, K. Nishimaki, T. Kawamata, T. Adachi, T. Noji, I. Watanabe, S. Ohira, W. Higemoto and K. Nagamine

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