trial of the model free-observation of anomalous electron-phonon coupling

• Project/Area Number: 26400322
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: Kwansei Gakuin University
• Principal Investigator: MIZUKI JUN'ICHIRO 関西学院大学, 理工学部, 教授 (90354977)
• Co-Investigator(Kenkyū-buntansha): 藤田 全基 東北大学, 金属材料研究所, 教授 (20303894) ; 町田 昌彦 国立研究開発法人日本原子力研究開発機構, システム計算科学センター, 研究主席 (60360434)
• Co-Investigator(Renkei-kenkyūsha): ISHII Kenji 国立研究開発法人量子科学技術研究開発機構, 量子ビーム科学研究部門・関西光科学研究所放射光科学研究センター, 上席研究員 (40343933) ; FUKUDA Tatsuo 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門・物質科学研究センター, 研究副主幹 (80354984)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 強相関電子 / 高温超伝導 / 非弾性X線散乱 / 中性子非弾性散乱 / 格子振動 / 電子励起 / 高温超伝導体 / 酸化物高温超伝導 / X線非弾性散乱 / 電子格子相互作用 / 鉄系超伝導 / 強相関電子系 / 非弾性Ｘ線散乱 / 銅酸化物超伝導体 / 共鳴非弾性Ｘ線散乱 / 放射光 / 電荷励起

Outline of Final Research Achievements

Since the discovery of high temperature superconductivity in copper oxides in 1986, many studies have been undertaken to understand the mechanism of superconductivity both experimentally and theoretically. Even though electronic and magnetic properties of these materials have been explored, the superconductiong mechanism has been left as an unsettled issue. In our previous work, the softning in the Cu-O bond-stretching optical phonon along [100] direction was observed, and found an anomalous behavior. In order to prove clearly this anomalous properties in this phonon, we performed this phonon measurements by x-ray and neutron inelastic scattering (IXS and INS). As a result, the width of the phonon spectrum observe by IXS is about 1.5 times of that observe by INS. This difference seems to originate the interaction diffence with materials between x-rays and neutrons, and we conclude that this phonon has a strong electron-phonon interaction.

Research Products

• [Int'l Joint Research] The University of Texas at Austin/Brookhaven National Laboratory/Carnegie Institution of Washington(米国)
• [Int'l Joint Research] NSRRC(Taiwan)
• [Int'l Joint Research] Center for High Pressure Sci. Tech./Univ. Chinese Academy of Sciences(China)
• [Int'l Joint Research] University of Genova(Italy)
• [Int'l Joint Research] Vienna University of(Austria)
• [Int'l Joint Research]
• [Journal Article] Reentrant valence transition in YbCu4:5 under pressure (2018)
  • Author(s): H. Yamaoka, N. Tsujii, Y. Yamamoto, Y. Michiue, J.-F. Lin, N. Hiraoka, H. Ishii, K.-D. Tsuei, J. Mizuki
  • Journal Title: Physical Review B Volume: 97 Issue: 8 Pages: 085106-085106
  • DOI: 10.1103/physrevb.97.085106
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Electronic structures and spin states of BaFe2As2 and SrFe2As2 probed by x-ray emission spectroscopy at Fe and As K-absorption edges (2017)
  • Author(s): Hitoshi Yamaoka, Yoshiya Yamamoto, Jung-Fu Lin, Junjie J. Wu, Xiancheng Wang, Changqing Jin, Masahiro Yoshida, Seiichiro Onari, Shigeyuki Ishida Yoshinori Tsuchiya, Nao Takeshita, Nozomu Hiraoka, Hirofumi Ishii, Ku-Ding Tsuei, Paul Chow, Yuming Xiao, Jun'ichiro Mizuki
  • Journal Title: Physical Review B Volume: 96 Issue: 8
  • DOI: 10.1103/physrevb.96.085129
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Observation of momentum-dependent charge excitations in hole-doped cuprates using resonant inelastic x-ray scattering at the oxygen K edge (2017)
  • Author(s): K. Ishii, T. Tohyama, S. Asano, K. Sato, M. Fujita, S. Wakimoto, K. Tustsui, S. Sota, J. Miyawaki, H. Niwa, Y. Harada, J. Pelliciari, Y. Huang, T. Schmitt, Y. Yamamoto, and J. Mizuki
  • Journal Title: Physical Review B Volume: 96 Issue: 11 Pages: 115148-115148
  • DOI: 10.1103/physrevb.96.115148
  • NAID: 120006472643
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Pressure-induced anomalous valence crossover in cubic YbCu5-based compounds (2017)
  • Author(s): H. Yamaoka, N. Tsujii, M.T. Suzuki, Y. Yamamoto, I. Jarrige, H. Sato, J.F. Lin, T. Mito, J. Mizuki, H. Sakurai, O. Sakai, N. Hiraoka, H. Ishii, K.D. Tsuei, M. Giovannini, E. Bauer
  • Journal Title: Scientific Reports Volume: 7 Issue: 1 Pages: 5846-5846
  • DOI: 10.1038/s41598-017-06190-3
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Electronic structure of ferromagnetic heavy fermion, YbPdSi, YbPdGe, and YbPtGe studied by photoelectron spectroscopy, x-ray emission spectroscopy, and DFT+DMFT calculations (2017)
  • Author(s): H. Yamaoka, P. Thunstrom, N. Tsujii, K. Katoh, Y. Yamamoto, E.F. Schwier, K. Shimada, H. Iwasawa, M. Arita, I.Jarrige, N. Hiraoka, H. Ishii, K.D. Tsuei, J. Mizuki
  • Journal Title: Journal of Physics: Condensed Matter Volume: 29 Issue: 47 Pages: 475502-475502
  • DOI: 10.1088/1361-648x/aa8b98
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Unusual coexistence of negative and positive charge transfer in mixed-valence NaxCa1-xCr2O4 (2017)
  • Author(s): Taguchi M.、Yamaoka H.、Yamamoto Y.、Sakurai H.、Tsujii N.、Sawada M.、Daimon H.、Shimada K.、Mizuki J.
  • Journal Title: Physical Review B Volume: 96 Issue: 24
  • DOI: 10.1103/physrevb.96.245113
  • Peer Reviewed / Open Access
• [Journal Article] Origin of pressure-induced superconducting phase in KxFe2－ySe2 studied by synchrotron x-ray diffraction and spectroscopy (2016)
  • Author(s): Y. Yamamoto, H. Yamaoka, M. Tanaka, H. Okazaki, T. Ozaki, Y. Takano, J.-F. Lin, H. Fujita, T. Kagayama, K. Shimizu, N. Hiraoka, H. Ishii, Y.-F. Liao, K.-D. Tsuei, and J. Mizuki,
  • Journal Title: Scientific Report Volume: 6 Issue: 1 Pages: 30946-30952
  • DOI: 10.1038/srep30946
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Pressure-induced phase transition in LaCo5 studied by x-ray emission spectroscopy, x-ray diffraction, and density functional theory (2016)
  • Author(s): H. Yamaoka, Y. Yamamoto, E.F. Schwier, N. Tsujii, M. Yoshida, Y. Ohta, H. Sakurai, J. Lin, N. Hiraoka, H. Ishii, K. Tsuei, M. Arita, K. Shimada, J. Mizuki
  • Journal Title: Phys. Rev. B Volume: 94 Issue: 16 Pages: 165156-165156
  • DOI: 10.1103/physrevb.94.165156
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] VI-3-2 Spin Dynamics in High-Transition-Temperature Cuprate Superconductor—With the Aim of Understanding of Energy Hierarchical Structure in the Magnetic Excitation— (2016)
  • Author(s): 藤田全基, 佐藤研太朗
  • Journal Title: RADIOISOTOPES Volume: 65 Issue: 11 Pages: 469-479
  • DOI: 10.3769/radioisotopes.65.469
  • NAID: 130005281102
  • ISSN: 0033-8303, 1884-4111
  • Peer Reviewed
• [Journal Article] Development of the compact furnace for the in-situ observation under ultra-high temperature by synchrotron x-ray surface diffraction (2016)
  • Author(s): M. Yoshida, Y. Kutsuma, D. Dohjima, K. Ohwadad,T.Inami, N. Ohtani, T. Kaneko and J. Mizuki
  • Journal Title: Materials Science Forum Volume: 858 Pages: 505-508
  • DOI: 10.4028/www.scientific.net/msf.858.505
  • Peer Reviewed
• [Journal Article] Quantitative study of the f occupation in CeMIn5 and other cerium compounds with hard X-rays (2016)
  • Author(s): M. Sundermann, F. Strigari, T. Willers, J. Weinen, Y. F. Liao, K. -D. Tsuei, N. Hiraoka, H. Ishii, H. Yamaoka, J. Mizuki, Y. Zekko, E. D. Bauer, J. L. Sarrao, J. D. Thompson, P. Lejay, Y. Muro, K. Yutani, T. Takabatake, A. Tanaka, N. Hollmann, L. H. Tjeng, A. Severing
  • Journal Title: Journal of Electron Spectroscopy and Related Phenomena Volume: 209 Pages: 1-8
  • DOI: 10.1016/j.elspec.2016.02.002
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Roles of transition metals interchanging with Lithium in electrode materials (2015)
  • Author(s): T. Kawaguchi, K. Fukuda, K. Tokuda, M. Sakaida, T. Ichitsubo, M. Oishi, J. Mizuki and E. Matsubara.
  • Journal Title: Phys. Chemistry Chemical Physics Volume: 17 Issue: 21 Pages: 14064-14070
  • DOI: 10.1039/c5cp00940e
  • Peer Reviewed / Open Access
• [Journal Article] Negative correlation between electrical response and domain size in a Ti-composition-gradient Pb[(Mg1/3Nb2/3)1－xTix]O3 crystal near the morphotropic phase boundary (2015)
  • Author(s): Daisuke Shimizu, Shinya Tsukada, Masato Matsuura, Jun'ya Sakamoto, Seiji Kojima, Kazumichi Namikawa, Jun'ichiro Mizuki, and Kenji Ohwada
  • Journal Title: Physical Review B Volume: 92 Issue: 17
  • DOI: 10.1103/physrevb.92.174121
  • Peer Reviewed
• [Journal Article] Pressure and temperature dependence of the Ce valence and c－f hybridization gap in CeTIn5(T=Co,Rh,Ir) heavy-fermion superconductors (2015)
  • Author(s): H. Yamaoka, Y. Yamamoto, E. F. Schwier, F. Honda, Y. Zekko, Y. Ohta, J.-F. Lin, M. Nakatake, H. Iwasawa, M. Arita, K. Shimada, N. Hiraoka, H. Ishii, K.-D. Tsuei, and J. Mizuki
  • Journal Title: Physical Review B Volume: 92 Issue: 23
  • DOI: 10.1103/physrevb.92.235110
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Toward Optimizing the Performance of Self-Regenerating Pt-Based Perovskite Catalysts. (2015)
  • Author(s): I. Jarrige, K. Ishii, D. Matsumura, Y. Nishihata, M. Yoshida, H. Kishi, M. Taniguchi, M. Uenishi, H. Tanaka, H. Kasai, and J. Mizuki
  • Journal Title: ACS Catalｙsis Volume: 5 Issue: 2 Pages: 1112-1118
  • DOI: 10.1021/cs501608k
  • Peer Reviewed / Open Access
• [Journal Article] Spin-Orbit coupling induced semi-metallic state in the 1/3 hole-doped hyper-kagome Na3Ir3O8 (2014)
  • Author(s): T. Takayama, A. Yaresko, A. Matsumoto, J. Nuss, K. Ishii, M. Yoshida, J. Mizuki, and H. Takagi
  • Journal Title: Scientific Reports Volume: 4 Issue: 1 Pages: 1-5
  • DOI: 10.1038/srep06818
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Heterophase fluctuations near T c in relaxor ferroelectrics (1-x)Pb(Zn1/3Nb 2/3)O3-xPbTiO3 (x=0.09) studied by x-ray diffuse scattering and coherent x-ray scattering. (2014)
  • Author(s): K. Ohwada, J. Mizuki, M. Matsushita, and K. Namikawa
  • Journal Title: Physical Review B Volume: 90 Issue: 10
  • DOI: 10.1103/physrevb.90.104109
  • Peer Reviewed / Open Access
• [Journal Article] Role of valence fluctuations in the superconductivity of Ce122 compounds. (2014)
  • Author(s): H. Yamaoka, Y. Ikeda, I. Jarrige, N. Tsujii, Y. Zekko, Y. Yamamoto, J. Mizuki, J.-F.Lin, N. Hiraoka, H. Ishii, K.-D. Tsuei, T. C. Kobayashi, F. Honda, and Y.Onuki
  • Journal Title: Physical Review Letters Volume: 113 Issue: 8
  • DOI: 10.1103/physrevlett.113.086403
  • Peer Reviewed / Open Access
• [Journal Article] Correlation between the valence state of Ce and magnetic transition in Ce(Ru1-xFex)2Al10 studied by resonant x-ray emission spectroscopy. (2014)
  • Author(s): Y. Zekko, Y. Yamamoto, H. Yamaoka, F. Tajima, T. Nishioka, F. Strigari, A. Severing, J.-F. Lin, N. Hiraoka, H. Ishii, K.-D. Tsuei, J. Mizuki
  • Journal Title: Physical Review B Volume: 89 Issue: 12
  • DOI: 10.1103/physrevb.89.125108
  • Peer Reviewed / Open Access
• [Presentation] Resonant Inelastic X-ray Scattering study in Materials science (2018)
  • Author(s): Jun'ichiro Mizuki
  • Organizer: 6th Annual Conference of Analytix 2018
  • Int'l Joint Research / Invited
• [Presentation] 鉄系超伝導体(NH3)yCs0.4FeSeの低温高圧下のXRD測定 (2017)
  • Author(s): 山本義哉，山岡人志，庄内星加，Lu Zheng，久保園芳博，平尾直久，今田沙織，大石泰生，水木純一郎
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学（大阪府豊中市）
  • Year and Date: 2017-03-17
• [Presentation] Electronic Excitations of Copper- and Iron-based Superconductors Studied by Resonant and Non-Resonant Inelastic X-ray Scattering (2017)
  • Author(s): Jun'ichiro Mizuki
  • Organizer: International Conference on Advanced Materials 2017
  • Int'l Joint Research / Invited
• [Presentation] Electronic Excitation of Cuprates and Iron-based Superconductors Studies by Inelastic X-ray Scattering (2017)
  • Author(s): Jun'ichiro Mizuki
  • Organizer: 4th Annual Global Congress of Knowledge Economy-2017
  • Int'l Joint Research / Invited
• [Presentation] Origin of the pressure-induced second superconducting phase of (NH3)yCs0.4FeSe with double-dome superconductivity (2017)
  • Author(s): Y. Yamamoto, H. Yamaoka, M. Yoshida, R. Tanaka, S. Shonai, N. Hirao, S. Imada, Y. Oishi, L. Zheng, Xiao Mio, Y. Kubozono, S. Onari, J.-F. Lin, N. Hiraoka, H. Ishii, K.-D. Tuei, J. Mizuki
  • Organizer: The 10th international conference on Inelastic X-ray Scattering (IXS)
  • Int'l Joint Research
• [Presentation] In Situ Observation of Electronic State Related to Adsorption State on Pt/C Surface by X-ray Absorption Spectroscopy (2017)
  • Author(s): S. Kusano, D. Matsumura, H. Kishi, T. Sakamoto, S. Yamaguchi, K. Ishii, H. Tanaka, J. Mizuki
  • Organizer: 国際シンポジウム“Future Earth”エネルギー課題に資する新奇なナノ物質・触媒・表面
  • Int'l Joint Research
• [Presentation] 鉄系超伝導体LnFeAsO1-xHxの高圧下でのX線発光分光、吸収分光、X線回折測定 (2017)
  • Author(s): 川井拓真, 山本義哉, 山岡人志, 吉田雅洋, 石井啓文, 平岡望, Ku-Ding TsueiC, Jung-Fu Lin, 山浦淳一, 飯村壮史, 松村聡, 細野秀雄, 水木純一郎
  • Organizer: 日本物理学会秋季大会
• [Presentation] 鉄系超伝導体KxFe2-ySe2の高圧下メスバウアー分光測定 (2017)
  • Author(s): 山本義哉，三井隆也，北尾真司，瀬戸誠，溝畑尚幸，尾崎壽紀，山岡人志，水木純一郎
  • Organizer: 日本物理学会秋季大会
• [Presentation] Inelastic X-ray scattering applied to materials science (2016)
  • Author(s): Jun'ichiro MIZUKI
  • Organizer: International Workshop on Advanced Materials and Nanotechnology 2016
  • Place of Presentation: ハノイ（ベトナム）
  • Year and Date: 2016-11-03
  • Int'l Joint Research / Invited
• [Presentation] X線発光分光法による鉄系超伝導体(NH3)yCs0.4FeSeの低温圧力下の電子状態の測定 (2016)
  • Author(s): 山本義哉，山岡人志，吉田雅洋，田中利歩，庄内星加，黒澤源太，Lu Zhen，久保園芳博，Jung-Fu Lin，平岡 望，石井啓文， Ku-Ding Tsuei，水木純一郎
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学（石川県金沢市）
  • Year and Date: 2016-09-13
• [Presentation] Electron-doping effect on the spin excitation spectrum in Pr1.4-xLa0. (2016)
  • Author(s): Shuyn Asano, Kenji. Tsutsumi, Kentaro Sato, Masaki Fujita
  • Organizer: International Conference on Strongly Correlated Electron Systems
  • Place of Presentation: Hangzhou（中国）
  • Year and Date: 2016-05-08
  • Int'l Joint Research
• [Presentation] 電子及びホールドープされたBaFe2As2の電子状態：X 線発光分光による測定 (2016)
  • Author(s): 山岡人志, 山本義哉, 吉田雅洋, 石田茂之, 土屋佳則, 竹下 直, Jung-Fu Lin, 平岡 望, 石井啓文, Ku-Ding Tsuei , 水木純一郎
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学泉キャンパス（宮城県・仙台市）
  • Year and Date: 2016-03-19
• [Presentation] 高圧下共鳴発光分光による価数搖動物質SmS の電子状態の研究 (2016)
  • Author(s): 鈴木葉、河出直哉、井村敬一郎、山本義哉、山岡人志、平岡望、石井啓文、鈴木博之、水木純一郎、出口和彦、佐藤憲昭
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学泉キャンパス（宮城県・仙台市）
  • Year and Date: 2016-03-19
• [Presentation] Influence of Inhomogeneity in the Relaxor Ferroelectrics Pb[(Mg1/3Nb2/3)1-xTix]O3 near Morphotoropic Phase Boundary (2015)
  • Author(s): D. Shimizu, K. Ohwada, S. Tsukada, M. Matsuura, J. Sakamoto, S. Tsutsui, A. Q. R. Baron, K. Namikawa, J. Mizuki
  • Organizer: 日本MRS Meeting
  • Place of Presentation: 横浜市開港記念会館他（神奈川県・横浜市）
  • Year and Date: 2015-12-08
• [Presentation] Electronic and crystal structures of KxFe2-ySe2 under high pressure studied by x-ray emission spectroscopy and x-ray diffraction (2015)
  • Author(s): Y. Yamamoto, H. Yamaoka, Y. Ohta, J.-F. Lin, H. Ishii, N. Hiraoka, K.-D. Tsuei, H. Fujita, T. Kagayama, K. Shimizu, M. Tanaka, H. Okazaki, Y. Ozaki, Y. Takano, and J. Mizuki,
  • Organizer: The 9th International Conference on Inelastic X-ray Scattring
  • Place of Presentation: National Sychrotron Radiateon Center, Hsinchu, Taiwan
  • Year and Date: 2015-11-22
  • Int'l Joint Research
• [Presentation] 鉄系超伝導体LaFeAsO1-xHxの高圧下でのX線回折とFe KβX線発光分光測定 (2015)
  • Author(s): 山本義哉，山岡人志，吉田雅洋，太田雄，石井啓文，平岡 望，Ku-Ding Tsuei，Jung-Fu Lin，石井賢司，山浦淳一，飯村壮史，松石聡，細野秀雄，水木純一郎
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学（大阪府・吹田市）
  • Year and Date: 2015-09-16
• [Presentation] 異常な磁気抵抗を示す(Na1-xCax)Cr2O4の光電子分光、X線吸収分光、X線回折による電子構造と結晶構造の測定 (2015)
  • Author(s): 山岡人志, 山本義哉, E. F. Schwier , 仲武昌史, 澤田正博, 櫻井裕也, 辻井直人, 有田将司, 島田賢也, 生天目博文, 谷口雅樹, 水木純一郎,
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学（大阪府・吹田市）
  • Year and Date: 2015-09-16
• [Presentation] Cubic YbCu5系化合物の高圧下におけるYb価数の異常な振舞い (2015)
  • Author(s): 山岡人志、辻井直人、鈴木通人、山本義哉、Ignace Jarrige , 佐藤 仁, Jung-Fu Lin , 水戸 毅, 櫻井裕也、平岡 望, 石井啓文, Ku-Ding Tsuei , 酒井 治, 水木純一郎, M. Giovannini, E. Bauer,
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学（大阪府・吹田市）
  • Year and Date: 2015-09-16
• [Presentation] 鉄系超伝導体KxFe2-ySe2の高圧下でのX線回折と共鳴X線発光分光測定 (2015)
  • Author(s): 山本義哉，太田 雄，山岡人志，Jung-Fu Lin，石井啓文、平岡 望，Ku-Ding Tsuei，藤田秀紀，加賀山朋子，清水克哉、田中将嗣、岡崎宏之，尾崎壽紀，高野義彦，水木純一郎
  • Organizer: 日本放射光学会年会
  • Place of Presentation: 立命館大学びわこ・くさつキャンパス
  • Year and Date: 2015-01-10 – 2015-01-12
• [Book] 超伝導磁束状態の物理 (2017)
  • Author(s): 町田昌彦（門脇和男編）
  • Total Pages: 692
  • Publisher: 裳華房