Study of anomalous spin and charge excitations in high temperature superconductors by quantum beam

• Project/Area Number: 22604007
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Japan Atomic Energy Agency
• 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)
• 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)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 高温超伝導 / 中性子散乱 / 共鳴X線非弾性散乱 / 強相関電子系 / 銅酸化物高温超伝 / 共鳴非弾性X線散乱 / 磁気励起 / 電荷励起 / 銅酸化物高温超伝導

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.

Research Products

• [Journal Article] Resonant inelast c X-ray scattering study of intra-band charge excitations in hole-doped high-Tc cupra (2013)
  • Author(s): S. Wakimoto, K. Ishii
  • Journal Title: Phys. Rev. B Volume: 87 Issue: 10 Pages: 104511-104511
  • DOI: 10.1103/physrevb.87.104511
  • Peer Reviewed
• [Journal Article] Ni-Substituution Effec cts on the S Spin Dynamics and Supercon nductivity i in La_<1.85>Sr_<0.15>CuO_4 (2012)
  • Author(s): M. Matsuurra, M. Fujita, K. Yamada
  • Journal Title: Phys Rev. B. Volume: 86 Issue: 13 Pages: 134529-134529
  • DOI: 10.1103/physrevb.86.134529
  • Peer Reviewed
• [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 spectroscopies (2012)
  • 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, A.Bansil
  • Journal Title: Phys.Rev.B Volume: 85 Issue: 11 Pages: 115109-115109
  • DOI: 10.1103/physrevb.85.115109
  • Peer Reviewed
• [Journal Article] Zn-induced spin dynamics in overdoped La_<2-x>Sr_xCu_<1-y>Zn_yO_4 (2012)
  • Author(s): S. D. Wilson, Z. Yamani, C. Dhital, B. Freelon, P. G. Freeman, J. A. Fernandez-Baca, K. Yamada, S. Wakimoto, W. J. L. Buyers, and R. J. Birgeneau
  • Journal Title: Phys. Rev. B Volume: 85 Issue: 1 Pages: 14507-14507
  • DOI: 10.1103/physrevb.85.014507
  • Peer Reviewed
• [Journal Article] Progress in Neutron Scattering Studies of Spin Excitations in High-Tc Cuprtates (2012)
  • Author(s): M. Fujita, H. Hiraka, M. Matsuda, M. Matsuura, J. M. Tranquada, S. Wakimoto, Guangyong Xu, K. Yamada
  • Journal Title: J. Phys. Soc. Jpn. Volume: 81 Issue: 1 Pages: 1-19
  • DOI: 10.1143/jpsj.81.011007
  • Peer Reviewed
• [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 scattering (2011)
  • 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
  • Journal Title: Phys. Rev. B Volume: 84 Issue: 14 Pages: 144517-144517
  • DOI: 10.1103/physrevb.84.144517
  • Peer Reviewed
• [Journal Article] Imaging of doped holes in a cuprate superconductor with high-resolution compton scattering (2011)
  • 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
  • Journal Title: Science Volume: 332 Issue: 6030 Pages: 698-698
  • DOI: 10.1126/science.1199391
  • Peer Reviewed
• [Journal Article] Inelastic neutron scattering study of the resonance mode in the optimally doped pnictide superconductor LaFeAsO_<0.92>F_<0.08> (2010)
  • Author(s): S. Shamoto, M. Ishikado, A. D. Christianson, M. D. Lumsden, S. Wakimoto, K. Kodama, A. Iyo, and M. Arai
  • Journal Title: Phys. Rev. B Volume: 82 Issue: 17 Pages: 172508-172508
  • DOI: 10.1103/physrevb.82.172508
  • Peer Reviewed
• [Journal Article] Magnetic field effect on Fe-induced short-range magnetic correlation and electrical conductivity in Bi1.75Pb0.35Sr1.90Cu0.91Fe0.09O6+y (2010)
  • Author(s): S. Wakimoto, 他10名
  • Journal Title: Phys. Rev Volume: 82 Issue: 6 Pages: 64507-64507
  • DOI: 10.1103/physrevb.82.064507
  • Peer Reviewed
• [Journal Article] Degradation of superconductivity and spin fluctuations by electron over-doping in LaFeAsO_<1-x>F_x (2010)
  • 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
  • Journal Title: J. Phys. Soc. Jpn. Volume: 79 Issue: 7 Pages: 74715-74715
  • DOI: 10.1143/jpsj.79.074715
  • Peer Reviewed
• [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
  • Journal Title: Phys. Rev. B Volume: 81 Issue: 14 Pages: 144501-144501
  • DOI: 10.1103/physrevb.81.144501
  • Peer Reviewed
• [Journal Article] Magnetic field effect on Fe-induced short-range magnetic correlation and electrical conductivity in Bi_<1.75>Pb_<0.35>Sr_<1.90>Cu_<0.91>Fe_<0.09>O_<6+y> (2010)
  • Author(s): 脇本秀一
  • Journal Title: Physical Review B Volume: 82
  • Peer Reviewed
• [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): 平賀晴弘
  • Journal Title: Physical Review B Volume: 81
  • Peer Reviewed
• [Journal Article] Degradation of superconductivity and spin fluctuation by electron over-doping in LaFeAsO_<1-x>F_x (2010)
  • Author(s): 脇本秀一
  • Journal Title: Journal of Physical Society Japan Volume: 79
  • Peer Reviewed
• [Presentation] Cu-K 吸収端共鳴X線非弾性散乱によるLa_<2-x>(Sr,Ba)_xCuO_4 の電荷励起の研究 (2012)
  • Author(s): 脇本秀一
  • Organizer: 日本物理学会2012 年秋季大会
  • Place of Presentation: 横浜
• [Presentation] Neutron scattering study of spin fluctuation in overdoped superconductor La_<2-x>Sr_xCuO_4 (2012)
  • Author(s): S. Wakimoto
  • Organizer: International Conference on Phase Separation and Superstripes (Superstripes 2012)
  • Place of Presentation: エーリチェ,イタリア
• [Presentation] Neutron scattering study of spin fluctuation in overdoped superconductor La2-xSrxCuO4 (2012)
  • Author(s): 脇本秀一
  • Organizer: International Conference "Phase Separation and superstripes in high temperature superconductors and related materials" (Superstripes 2012)
  • Place of Presentation: Ettore Majorana Foundation and Center for Scientific Culture, Erice, Italy
  • Invited
• [Presentation] Cu-K吸収端共鳴X線非弾性散乱によるLa2-x(Sr,Ba)xCuO4の電荷励起の研究 (2012)
  • Author(s): 脇本秀一
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 横浜国立大学常盤台キャンパス（神奈川県）
• [Presentation] Fe-induced short-range magnetic correlation in Bi_<1.75>Pb_<0.35>Sr_<1.90>Cu_<0.91>Fe_<0.09>O_<6+y> (2011)
  • Author(s): 脇本秀一
  • Organizer: 1 st Asia-Oceania Conference on Neutron Scattering (AOCNS)
  • Place of Presentation: つくば国際会議場(茨城県)
  • Year and Date: 2011-11-21
• [Presentation] Fe-induced short range magnetic correlation in Bi_<1.75>Pb_<0.35>Sr_<1.90>Cu_<0.91>Fe_<0.09>O_<6+y> (2011)
  • Author(s): S. Wakimoto
  • Organizer: ASIA-OCEANIA Conference on Neutron Scattering
  • Place of Presentation: 筑波