Microscopic Research for Magnetism and Superconductivity of Plutonium Metal and Plutonium Compounds

2008 Fiscal Year Final Research Report

• Project/Area Number: 18540361
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Tokyo Metropolitan University (2007-2008); Japan Atomic Energy Agency (2006)
• Principal Investigator: HOTTA Takashi Tokyo Metropolitan University, 大学院・理工学研究科, 准教授 (00262163)
• Project Period (FY): 2006 – 2008
• Keywords: 強相関系 / 磁性 / 超伝導 / 低温物理

Research Abstract

Pu金属のd相(面心立方晶)では、物性を担う5f電子は局在的と考えられてきたが、近年の実験によると、5f電子の磁気モーメントは非常に小さく、局在性に疑問が投げかけられていた。本研究では、Puイオンを面心立方格子に配置した理論模型を数値的に解析し、5f電子の磁気モーメントではなく、5f軌道が整列している可能性を指摘した。また、圧力による誘起磁気モーメントを予言しており、実験による検証が可能である

Research Products

• [Journal Article] Magnetically Robust Multipole Kondo Effect (2009)
  • Author(s): Takashi Hotta
  • Journal Title: J. Phys. Conf. Ser. 150 Pages: 042061-1-4
  • Peer Reviewed
• [Journal Article] Effect of Rattling Phonons on Sommerfeld Constant (2008)
  • Author(s): Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 77 Pages: 103711-1-4
  • Peer Reviewed
• [Journal Article] Field-Induced Multipole States of Sm-Based Filled Skutterudites (2008)
  • Author(s): Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 77 Pages: 074716-1-9
  • Peer Reviewed
• [Journal Article] Multipole as f-Electron Spin-Charge Density in Filled Skutterudites (2008)
  • Author(s): Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 77 Suppl. A Pages: 96-101
  • Peer Reviewed
• [Journal Article] Antiferro-quadrupole state of orbital-degenerate Kondo lattice model with f^2 configuration (2008)
  • Author(s): Hiroaki Onishi and Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 77 Suppl. A Pages: 199-201
  • Peer Reviewed
• [Journal Article] Exotic Kondo effects in electron-phonon systems (2008)
  • Author(s): Takashi Hotta
  • Journal Title: Physica B403 Pages: 1371-1372
  • Peer Reviewed
• [Journal Article] Multipole State of Heavy Lanthanide Filled Skutterudites (2007)
  • Author(s): Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 76 Pages: 083705-1-5
  • Peer Reviewed
• [Journal Article] Enhanced Kondo Effect in an Electron System Dynamically Coupled with Local OpticalPhonon (2007)
  • Author(s): Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 76 Pages: 084702-1-8
  • Peer Reviewed
• [Journal Article] Multipole Susceptibility of Multiorbital Anderson Model Coupled with Jahn-TellerPhonons (2007)
  • Author(s): Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 76 Pages: 034713-1-11
  • Peer Reviewed
• [Journal Article] Kondo Effect in an Electron System with Dynamical Jahn-Teller Impurity (2007)
  • Author(s): Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 76 Pages: 023705-1-5
  • Peer Reviewed
• [Journal Article] Spin-orbital gap of multiorbital antiferromagnet with geometrical frustration (2007)
  • Author(s): Hiroaki Onishi and Takashi Hotta
  • Journal Title: Phys. Rev. B75 Pages: 014410-1-8
  • Peer Reviewed
• [Journal Article] Multipoles in δ-Pu (2007)
  • Author(s): Takashi Hotta
  • Journal Title: J. of Alloys Compd 444-445 Pages: 162-167
  • Peer Reviewed
• [Journal Article] Microscopic Aspects of Multipole Propertiesof Filled Skutterudites (2007)
  • Author(s): Takashi Hotta
  • Journal Title: J. Magn. Magn. Mater. 310 Pages: 1691-1697
  • Peer Reviewed
• [Journal Article] Relativistic Band-Structure Calculations for Electronic Properties of Actinide Dioxides (2007)
  • Author(s): Takahiro Maehira and Takashi Hotta
  • Journal Title: J. Magn. Magn. Mater. 310 Pages: 754-756
  • Peer Reviewed
• [Journal Article] Effect of Hund's Rule Coupling on SU(4) Spin-Orbital System (2007)
  • Author(s): Hiroaki Onishi and Takashi Hotta
  • Journal Title: J. Magn. Magn. Mater. 310 Pages: 790-792
  • Peer Reviewed
• [Journal Article] Superconductivity in f-Electron Systems Controlled by Crystalline Electric Fields (2007)
  • Author(s): Katsunori Kubo and Takashi Hotta
  • Journal Title: J. Magn. Magn. Mater. 310 Pages: 572-574
  • Peer Reviewed
• [Journal Article] Quasi-Kondo Phenomenon due to Dynamical Jahn-Teller Effect (2006)
  • Author(s): Takashi Hotta
  • Journal Title: Phys. Rev. Lett. 96 Pages: 197201-1-4
  • Peer Reviewed
• [Journal Article] Effective Crystalline Electric Field Potential in a j-j Coupling Scheme (2006)
  • Author(s): Takashi Hotta and Hisatomo Harima
  • Journal Title: J. Phys. Soc. Jpn. 75 Pages: 124711-1-15
  • Peer Reviewed
• [Journal Article] Orbital-Controlled Superconductivity f-Electron Systems (2006)
  • Author(s): Katsunori Kubo and Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 75 Pages: 083702-1-5
  • Peer Reviewed
• [Journal Article] Spin, charge, and orbital correlations in the one-dimensional t_<2g>-orbital Hubbard model (2006)
  • Author(s): Jose C. Xavier, Hiroaki Onishi, Takashi Hotta, and Elbio Dagotto
  • Journal Title: Phys. Rev. B73 Pages: 014405-1-9
  • Peer Reviewed
• [Journal Article] Electronic Properties of Transuranium Compounds with HoCoGa_5-Type TetragonalCrystal Structure (2006)
  • Author(s): Takahiro Maehira, Takashi Hotta, Kazuo Ueda, and Akira Hasegawa
  • Journal Title: New J. Phys. 8 Pages: 24-1-20
• [Journal Article] Magnetic Susceptibility of Multiorbital Systems (2006)
  • Author(s): Katsunori Kubo and Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 75 Pages: 013702-1-4
  • Peer Reviewed
• [Journal Article] Orbital ordering phenomena in d- and f-electron systems (2006)
  • Author(s): Takashi Hotta
  • Journal Title: Reports on Progress in Physics 69 Pages: 2061-2155
  • Peer Reviewed
• [Journal Article] Relativistic Band-Structure Calculation for PrCoIn_5 : A Theoretical Approach to Pr-BasedCompound from Itinerant Picture (2006)
  • Author(s): Takahiro Maehira and Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 75 Suppl. Pages: 262-265
  • Peer Reviewed
• [Journal Article] Multipole Ordering and Fluctuations in f-Electron Systems (2006)
  • Author(s): Katsunori Kubo and Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 75 Suppl. Pages: 232-237
  • Peer Reviewed
• [Journal Article] Multipole Correlations in Low-Dimensional f-Electron Systems (2006)
  • Author(s): Hiroaki Onishi and Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. 75 Suppl. Pages: 266-269
  • Peer Reviewed
• [Journal Article] Stripe Charge Ordering in Triangular-Lattice Systems (2006)
  • Author(s): Hiroaki Onishi and Takashi Hotta
  • Journal Title: AIP Conference Proceedings 850 Pages: 1075-1076
  • Peer Reviewed
• [Journal Article] Spin-charge-orbital ordering in triangle-based lattices (2006)
  • Author(s): Hiroaki Onishi and Takashi Hotta
  • Journal Title: Physica B378-380 Pages: 589-591
  • Peer Reviewed
• [Journal Article] Electronic structure and the Fermi surface of ThRhIn_5 in comparison with Uranium and Transuranium Compounds (2006)
  • Author(s): Takahiro Maehira and Takashi Hotta
  • Journal Title: Physica B378-380 Pages: 1027-1028
  • Peer Reviewed
• [Journal Article] Multipole ordering in f-electron systems (2006)
  • Author(s): Katsunori Kubo and Takashi Hotta
  • Journal Title: Physica B378-380 Pages: 1081-1082
  • Peer Reviewed
• [Journal Article] Magnetic and orbital fluctuations in filled skutterudites (2006)
  • Author(s): Takashi Hotta
  • Journal Title: Physica B378-380 Pages: 51-53
  • Peer Reviewed
• [Presentation] 軌道秩序相近傍の超伝導 (2009)
  • Author(s): 堀田貴嗣
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教学院池袋キャンパス
  • Year and Date: 2009-03-27
• [Presentation] 非調和性局所フォノンによる電子比熱係数の増強 (2008)
  • Author(s): 堀田貴嗣
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学上田キャンパス
  • Year and Date: 2008-09-22
• [Presentation] Magnetically Robust Multipole Kondo Effect (2008)
  • Author(s): Takashi Hotta
  • Organizer: 25^<th> International Conference on Low Temperature Physics
  • Place of Presentation: Amsterdam, Holland
  • Year and Date: 2008-08-08
• [Presentation] Sm系充填スクッテルダイト化合物の多極子状態 (2008)
  • Author(s): 堀田貴嗣
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学本部キャンパス
  • Year and Date: 2008-03-23
• [Presentation] Multipoles in f-electron systems (2007)
  • Author(s): Takashi Hotta
  • Organizer: Heavy Fermion Frontier workshop in honor of Joe D. Thompson's 60th birthday
  • Place of Presentation: Bishops Lodge in Santa Fe, NW, U.S.A.
  • Year and Date: 2007-11-13
• [Presentation] Multipole expansion of f-electron spin-charge density in filled skutterudites (2007)
  • Author(s): Takashi Hotta
  • Organizer: International Conference on "New Quantum Phenomena in Skutterudite andRelated Systems"
  • Place of Presentation: Kobe, Japan
  • Year and Date: 2007-09-28
• [Presentation] 重希土類充填スクッテルダイト化合物の多極子状態 (2007)
  • Author(s): 堀田貴嗣
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 北海道大学札幌キャンパス
  • Year and Date: 2007-09-23
• [Presentation] Multipoles in f-electron systems (2007)
  • Author(s): Takashi Hotta
  • Organizer: NSFC-JSPS Joint Conference on Novel Quantum Phenomena in Strongly CorrelatedElectronic Systems, Systems, Renmin University of China
  • Place of Presentation: Beijin, P. R. China
  • Year and Date: 2007-06-27
• [Presentation] Exotic Kondo effects in electron-phonon systems (2007)
  • Author(s): Takashi Hotta
  • Organizer: International Symposium on Strongly Correlated Electron Systems
  • Place of Presentation: Houston, U. S. A.
  • Year and Date: 2007-05-14
• [Presentation] 電子フォノン系の近藤効果 (2007)
  • Author(s): 堀田貴嗣
  • Organizer: 日本物理学会2007年春季大会
  • Place of Presentation: 鹿児島大学郡元キャンパス
  • Year and Date: 2007-03-19
• [Presentation] Novel magnetism in actinide compounds with active orbital degrees of freedom (2007)
  • Author(s): Takashi Hotta
  • Organizer: The 2nd Indo-Japan Seminar "Novel MagneticMaterials and their Electronic Structures"
  • Place of Presentation: Tokyo
  • Year and Date: 2007-02-28
• [Presentation] 動的ヤーンテラー近藤効果 (2006)
  • Author(s): 堀田貴嗣
  • Organizer: 日本物理学会2006年秋季大会
  • Place of Presentation: 千葉大学
  • Year and Date: 2006-09-23
• [Presentation] Microscopic Aspects of Multipole Properties of Filled Skutterudites (2006)
  • Author(s): Takashi Hotta
  • Organizer: International Conference on Magnetism 2006 (ICM2006)
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2006-08-24
• [Presentation] Microscopic theory of magnetism and superconductivity of Pu and PuMGa5 on the basisof a j-j coupling scheme (2006)
  • Author(s): Takashi Hotta
  • Organizer: Plutonium Futures-The Science 2006, Asilomar Conference Grounds, Pacific Grove
  • Place of Presentation: U.S.A.
  • Year and Date: 2006-07-12
• [Book] Progress in Ferromagnetism Research (356 pages), ed. V. N. Murray, p.19-38,Nova Science Inc., New York (2006)
  • Author(s): Takashi Hotta
  • Publisher: Ferromagnetism in undoped manganites
• [Remarks]
  • URL: http://ccmp1.phys.metro-u.ac.jp/ccmp/member/hotta/