Study of multi-pole ordering in trans-uranium compounds by neutron scattering experiment under high pressure and high magnetic field

2008 Fiscal Year Final Research Report

• Project/Area Number: 18740219
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Osaka University
• Principal Investigator: HONDA Fuminori Osaka University, 大学院理学研究科, 助教 (90391268)
• Project Period (FY): 2006 – 2008
• Keywords: 強相関電子系 / アクチノイド化合物 / 希土類化合物 / 中性子回折 / 高圧力 / 強磁場 / 量子臨界現象 / 圧力誘起超伝導

Research Abstract

近年注目されている希土類・アクチノイド化合物の新奇な電子物性の発現機構を調べる目的で、純良単結晶を用いて、超高圧・強磁場・極低温といった複合極限条件下における電気抵抗測定や強磁場中における放射光を用いた(非)共鳴x線散乱、中性子回折などの手法で研究を行った。その結果、NpTGa_5(T: 遷移金属)において5f電子軌道の寄与を反映した新奇な電子状態、UCu_2Si_2のスピン・電荷秩序共存状態、RPd_5Al_2(R: Np, Ce)の重い電子系超伝導など数々の物質の電子状態を明らかにした。また超ウラン化合物に加圧可能な高圧装置、さらにこの技術を応用し、より高圧力を発生できるダイヤモンドアンビル型高圧装置を開発した。

Research Products

• [Journal Article] Electrical and Magnetic Properties of R_3Al_<11> (R = La, Ce, Pr, and Nd) (2008)
  • Author(s): C. S. Garde, T. Takeuchi, Y. Nakano, Y. Takeda, Y. Ota, Y. Miyauchi, K. Sugiyama, M. Hagiwara, K. Kindo, F. Honda, R. Settai, Y. Onuki
  • Journal Title: Journal of Physical Society of Japan Vol.77(No.12, December) Pages: 124704(1-12)
  • Peer Reviewed
• [Journal Article] Field-Induced Antiferromagnetism and Upper Critical Field in Pressure-Induced Superconductor CeRhIn_5 (2008)
  • Author(s): Yuki Ida, Rikio Settai, Yuuki Ota, Fuminori Honda, Yoshichika Onuki
  • Journal Title: Journal of Physical Society of Japan Vol.77 Pages: 084708(1-6)
  • Peer Reviewed
• [Journal Article] Pressure-induced Superconductivity in Antiferromagnet CePd_5Al_2 (2008)
  • Author(s): F. Honda, M.-A. Measson, Y. Nakano, N. Yoshitani, E. Yamamoto, Y. Haga, T. Takeuchi, H. Yamagami, K. Shimizu, R. Settai, Y. Onuki
  • Journal Title: Journal of Physical Society of Japan Vol.77 Pages: 043701(1-4)
  • Peer Reviewed
• [Journal Article] Effect of Pressure and Magnetic Field on the Superconducting State of a Heavy Fermion Superconductor NpPd_5Al_2 (2008)
  • Author(s): F. Honda, R. Settai, D Aoki, Y. Haga, T. D. Matsuda, N. Tateiwa, S. Ikeda, Y. Homma, H. Sakai, Y. Shiokawa, E. Yamamoto, A. Nakamura
  • Journal Title: Journal of Physical Society of Japan Vol.77, Suppl. A Pages: 339-341
  • Peer Reviewed
• [Journal Article] Electrical Properties and dHvA Experiments in Ferromagnet Ce_3Al_<11> (2008)
  • Author(s): C. S. Garde, F. Honda, R. Settai, Y. Onuki
  • Journal Title: Journal of Physical Society of Japan Vol.77, Suppl. A Pages: 356-358
  • Peer Reviewed
• [Journal Article] Ground state magnetic structure of Ce_2Ni_3Ge_5 (2008)
  • Author(s): F. Honda, N. Metoki, T.D. Matsuda, Y. Haga, A. Thamizhavel, Y. Okuda, R. Settai, Y. Onuki
  • Journal Title: J. Alloys and Compounds Vol. 451 Pages: 504-506
  • Peer Reviewed
• [Journal Article] Resonant x-ray scattering study of NpRhGa_5 and NpCoGa_5 (2008)
  • Author(s): B. Detlefs, S. B. Wilkins, R. Caciuffo, J. A. Paixao, K. Kaneko, F. Honda, N. Metoki
  • Journal Title: Physical Review B Vol.77 Pages: 024425(1-10)
  • Peer Reviewed
• [Journal Article] 重い電子系形成途上で出現するNpPd_5Al_2の異方的超伝導 (2007)
  • Author(s): 青木大, 本間佳哉, 塩川佳伸, 芳賀芳範, 松田達麿, 立岩尚之, 池田修悟, 酒井宏典, 山本悦嗣, 中村彰夫, 安岡弘志, 山上浩志, 摂待力生, 本多史憲, 大貫惇睦
  • Journal Title: 固体物理 Vol.42 Pages: 569-580
• [Journal Article] Specific heat and AC susceptibility of antiferromagnetic Kondo lattices CeAu_2Si_2 and CeAg_2Si_2 (2007)
  • Author(s): E. Santava, J. Vejpravova, F. Honda, T. Komatsubara, V. Sechovsky
  • Journal Title: Physica B Vol.310 Pages: e586-e588
  • Peer Reviewed
• [Journal Article] Neutron Scattering Study on the Magnetic Structure and the Metamagnetic Transition between the Low- and High-moment States of NpNiGa_5 (2006)
  • Author(s): F. Honda, N. Metoki, K. Kaneko, S. Jonen, E. Yamamoto, D. Aoki, Y. Homma, Y. Shiokawa, Y. Onuki
  • Journal Title: Physical Review B Vol.74 Pages: 144413, 12
  • Peer Reviewed
• [Journal Article] Neutron diffraction study of the magnetic structure and the successive transition between low-and high-moments of 5f electronic states in an itinerant antiferromagnet NpRhGa_5 (2006)
  • Author(s): S. Jonen, N. Metoki, K. Kaneko, F. Honda, D. Aoki, Y. Homma, E. Yamamoto, Y. Haga, Y. Shiokawa, Y. Onuki
  • Journal Title: Physical Review B Vol.74 Pages: 144412, 8
  • Peer Reviewed
• [Journal Article] Incommensurate longitudinal SDW state with a long periodicity in UCu_2Si_2 (2006)
  • Author(s): F. Honda, N. Metoki, T.D. Matsuda, Y. Haga, Y. Onuki
  • Journal Title: Journal of Physical Society of Japan Vol.75 Suppl. Pages: 121-123
  • Peer Reviewed
• [Journal Article] Magnetic Phase Diagram and Change in 5f Electronic Sates in NpNiGa_5 (2006)
  • Author(s): F. Honda, N. Metoki, K. Kaneko, S. Jonen, E. Yamamoto, D. Aoki, Y. Homma, Y. Shiokawa, Y. Onuki
  • Journal Title: Physica B Vol. 378-380 Pages: 1009-1010
  • Peer Reviewed
• [Journal Article] A-type antiferromagnetic ordering and the transition of the 5f electronic state accompanied by unusual moment reorientation in NpRhGa_5 (2006)
  • Author(s): S. Jonen, N. Metoki, F. Honda, K. Kaneko, E. Yamamoto, Y. Haga, D. Aoki, Y. Homma, Y. Shiokawa, Y. Onuki
  • Journal Title: Journal of Physical Society of Japan Vol.75 Suppl. Pages: 41-43
  • Peer Reviewed
• [Journal Article] Magnetic structure and successive phase transition in NpRhGa_5 (2006)
  • Author(s): S. Jonen, N. Metoki, K. Kaneko, F. Honda, D. Aoki, Y. Homma, E. Yamamoto, Y. Haga, Y. Shiokawa, Y. Onuki
  • Journal Title: Physica B Vol. 378-380 Pages: 1018-1020
  • Peer Reviewed
• [Journal Article] Non-Fermi liquid behaviour in UCoAl : Pressure variations (2006)
  • Author(s): L. Havela, F. Honda, J.-C. Griveau, A. V. Andreev, A. Kolomiets, V. Sechovsky
  • Journal Title: Journal of Alloys and Compounds Vols.408-412 Pages: 1316-1319
  • Peer Reviewed
• [Presentation] 反強磁性体CeRhGe2 とCePt2Ge2の高圧下物性 (2009)
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 20090327-30
• [Presentation] 超高圧下で現れる重い電子超伝導の探索(招待講演) (2009)
  • Organizer: 第9回極限環境科学リサーチコア研究会「微少極限環境下の物理現象」, 九州大学「極限環境科学」リサーチコア主催
  • Place of Presentation: 九州大学
  • Year and Date: 2009-03-05
• [Presentation] 高圧下におけるCePt_2Ge_2の量子臨界現象 (2008)
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 20080920-23
• [Presentation] Superconducting properties of pressure induced superconductor CePd_5Al_2 (2008)
  • Organizer: Intl' conf. on Strongly correlated Electron Systems 2008
  • Place of Presentation: Buzios, Brazil
  • Year and Date: 20080817-22
• [Presentation] 高圧下におけるCePd_5Al_2単結晶の量子臨界点の探索 (2008)
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 20080322-26
• [Presentation] CePd_5Al_2の単結晶育成と物性 (2008)
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 20080322-26
• [Presentation] アクチノイド化合物の一軸圧力下における物性研究 (2008)
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 20080322-26
• [Presentation] Pressure-induced superconductivity in f-electron systems : CePd_5Al_2, CeNiGe_0 and CeRhGe_2 (2008)
  • Organizer: 新学術領域研究「重い電子系の形成と秩序化」第1回研究会
  • Place of Presentation: 東京大学
  • Year and Date: 20080309-11
• [Presentation] Effect of pressure on the superconducting state of a heavy fermion superconductor NpPd_2Al_2 (2007)
  • Organizer: New Quantum Phenomena in Skutterudite and Related Systems
  • Place of Presentation: 神戸大学
  • Year and Date: 20070926-30
• [Presentation] 重い電子系超伝導体NpPd_5Al_2の超伝導に及ぼす圧力効果 (2007)
  • Organizer: 日本物理学会2007年秋季大会
  • Place of Presentation: 北海道大学
  • Year and Date: 20070921-24