2012 Fiscal Year Final Research Report
Study of anomalous spin and charge excitations in high temperature superconductors by quantum beam
| Project/Area Number |
22604007
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Quantum beam science
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
WAKIMOTO Shuichi 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 主任研究員 (40399415)
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| Co-Investigator(Renkei-kenkyūsha) |
ISHII Kenji 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 副主任研究員 (40343933)
HIRAKA Haruhiro 東北大学, 金属材料研究所, 助教 (90323097)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 高温超伝導 / 中性子散乱 / 共鳴X線非弾性散乱 |
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| Research Abstract |
High temperature superconductivity occurs as a result of cooperation of spin and charges. We performed neutron scattering and resonant inelastic x-ray scattering (RIXS) complementarily to understand excited states of spin and charges in high-Tc cuprates. We clarified a universal charge excitation in metallic regime by RIXS. In addition we clarified itinerant electrons plays an important role in magnetic correlation in metallic regime by neutron.
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[Journal Article] Resonant inelastic X-ray scattering study of intra-band excitations in hole-doped high-Tc cuprates2013
Author(s)
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
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Journal Title
Phys. Rev. B
Volume: 87
Pages: 104511
DOI
Peer Reviewed
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[Journal Article] Bulk Fermi surface and momentum density in heavily doped La_<2-x>Sr_xCuO_4 using high resolution Compton scattering and positron annihilation spectroscopies2012
Author(s)
W. Al-Sawai, B. Barbiellini, Y. Sakurai, M. Itou, P. E. Mijnarends, R. S. Markiewicz, S. Kaprzyk, S. Wakimoto, M. Fujita, S. Basak, H. Lin, Yung Jui Wang, S. W. H. Eijt, H. Schut, K. Yamada, and A. Bansil
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Journal Title
Phys. Rev. B
Volume: 85
Pages: 115109
DOI
Peer Reviewed
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[Journal Article] S+- like spin resonance in the iron-based nodal superconductor BaFe_2 (As_<0.65>P_<0.35>)_2 observed using inelastic neutron scattering2011
Author(s)
M. Ishikado, Y. Nagai, K. Kodama, R. Kajimoto, M. Nakamura, Y, Inamura, S. Wakimoto, H. Nakamura, M. Machida, K. Suzuki, H. Usui, K. Kuroki, A. Iyo, H. Eisaki, M. Arai, S . Shamoto
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Journal Title
Phys. Rev. B
Volume: 84
Pages: 144517
DOI
Peer Reviewed
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[Journal Article] Imaging of doped holes in a cuprate superconductor with high-resolution compton scattering2011
Author(s)
Y. Sakurai, M. Itou, B. Barbiellini, P. E. Mijnarends, R. S. Markiewicz, S. Kaprzyk, J. M. Gillet, S. Wakimoto, M. Fujita, S. Basak, Yung Jui Wang, W. Al-Sawai, H. Lin, A. Bansil, and K. Yamada
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Journal Title
Science
Volume: 332
Pages: 698
DOI
Peer Reviewed
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[Journal Article] Degradation of superconductivity and spin fluctuations by electron over-doping in LaFeAsO_<1-x>F_x2010
Author(s)
S. Wakimoto, K. Kodama, M. Ishikado, M. Matsuda, R. Kajimoto, M. Arai, K. Kakurai, F. Esaka, A. Iyo, H. Kito, H. Eisaki, and S. Shamoto
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Journal Title
J. Phys. Soc. Jpn.
Volume: 79
Pages: 074715
DOI
Peer Reviewed
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[Journal Article] Incommensurate spin correlations induced by magnetic Fe ions substituted into overdoped Bi_<1.75>Pb_<0.35>Sr_<1.90>CuO_<6+z>2010
Author(s)
H. Hiraka, Y. Hayashi, S. Wakimoto, M. Takeda, K. Kakurai, T. Adachi, Y. Koike, I. Yamada, M. Miyazaki, M. Hiraishi, S. Takeshita, A. Kohda, R. Kadono, J. M. Tranquada, and K. Yamada
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Journal Title
Phys. Rev. B
Volume: 81
Pages: 144501
DOI
Peer Reviewed
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