Study of Local Electronic State and the Hybridized Orbital Order under Magnetic Field and Pressure by Resonant Soft X-ray and Neutron Scattering

2013 Fiscal Year Final Research Report

• Project/Area Number: 21224008
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: MURAKAMI Youichi 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (60190899)
• Co-Investigator(Kenkyū-buntansha): NAKAO Hironori 高エネルギー加速器研究機構, 物質構造科学研究所, 准教授 (70321536) ; IWASA Kazuaki 東北大学, 理学研究科, 准教授 (00275009) ; AMEMIYA Kenta 高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (80313196) ; NAKAO Akiko 総合科学研究機構, 東海事業センター, 副主任研究員 (90392050) ; ISHIHARA Sumio 東北大学, 理学研究科, 教授 (30292262) ; TOMIYASU Keisuke 東北大学, 理学研究科, 助教 (20350481) ; KUBOTA Masato 日本原子力研究開発機構, 量子ビーム応用研究部門, 研究副主幹 (10370074) ; KOIDE Tsuneharu 高エネルギー加速器研究機構, 加速器科学支援センター, シニアフェロー (10150012)
• Project Period (FY): 2009-05-11 – 2014-03-31
• Keywords: 放射光 / 中性子 / 共鳴散乱 / 軌道秩序 / 電子構造 / 磁性 / 構造 / 機能材料

Research Abstract

In strongly correlated electron systems, we have sometimes observed novel ordering states of localized (d or f) and itinerant (p) electrons due to the effect of orbital hybridization. In this study we have observed the orderings of electron degrees of freedom for itinerant electrons as well as localized electrons in some transition metal compounds by using synchrotron X-ray, soft X-ray and neutron diffraction/scattering techniques under a high pressure or a strong magnetic field. From these observations we have elucidated the generating mechanism of the orderings. In particular, diffractometers (spectrometers) with superconducting magnet for resonant soft X-ray scattering were developed for this purpose.

Research Products

• [Journal Article] Construction of a soft X-ray diffractometer with a 7.5-T superconducting magnet (2014)
  • Author(s): Jun Okamoto, Hironori Nakao, Yuichi Yamasaki, Takaaki Sudayama, Kensuke Kobayashi, Yukari Takahashi, Hiroyuki Yamada, Akihito Sawa, Masato Kubota, Reiji Kumai and Youichi Murakami
  • Journal Title: J. Phys. : Conf. Ser Volume: 502012016 Pages: 1-4
  • DOI: 10.1088/1742-6596/502/1/012016
  • Peer Reviewed
• [Journal Article] Development of an in-vacuum diffractometer for resonant soft X-ray scattering (2014)
  • Author(s): H Nakao, Y Yamasaki, J Okamoto, T Sudayama, Y Takahashi, K Kobayashi, R Kumai and Y Murakami
  • Journal Title: J. Phys. : Conf. Ser Volume: 502012015 Pages: 1-4
  • DOI: 10.1088/1742-6596/502/1/012015
  • Peer Reviewed
• [Journal Article] Antiferromagnetic Order of the Co2+High-Spin State with a Large Orbital Angular Momentum in La_<1.5>Ca_<0.5>CoO_4 (2014)
  • Author(s): Jun Okamoto, Hironori Nakao, Yuichi Yamasaki, Hiroki Wadati, Arata Tanaka, Masato Kubota, Kazumasa Horigane, Youichi Murakami, and Kazuyoshi Yamada
  • Journal Title: J. Phys. Soc. Jpn Volume: 83, 044705 Pages: 1-6
  • DOI: 10.7566/JPSJ.83.044705
  • Peer Reviewed
• [Journal Article] Spin-Orbital Superstructure in Strained Ferrimagnetic Perovskite Cobalt Oxide (2013)
  • Author(s): J. Fujioka, Y. Yamasaki, H. Nakao, R. Kumai, Y. Murakami, M. Nakamura, M. Kawasaki, and Y. Tokura
  • Journal Title: Phys. Rev. Lett Volume: 111, 027206 Pages: 1-5
  • DOI: 10.1103/PhysRevLett.111.027206
  • Peer Reviewed
• [Journal Article] Diffractometer for small angle resonant soft x-ray scattering under magnetic field (2013)
  • Author(s): Yuichi Yamasaki, Takaaki Sudayama, Jun Okamoto, Hironori Nakao, Masato Kubota and Youichi Murakami
  • Journal Title: J. Phys. : Conf. Ser Volume: 425, 132012 Pages: 1-4
  • DOI: 10.1088/1742-6596/425/13/132012
  • Peer Reviewed
• [Journal Article] X-ray photoinduced persistent and bidirectional phase transition enabled by impurity doping in layered manganite (2013)
  • Author(s): Y. Yamaki Y. Yamasaki, H. Nakao, Y. Murakami, Y. Kaneko and Y. Tokura
  • Journal Title: Phys. Rev. B Volume: 081107(R) Pages: 1-5
  • DOI: 10.1103/PhysRevB.87.081107
  • Peer Reviewed
• [Journal Article] Resonant X-ray Scattering Experiments on the Ordering of Electronic Degrees of Freedom (2013)
  • Author(s): Takeshi MATSUMURA, Hironori NAKAO, and Youichi MURAKAMI
  • Journal Title: J. Phys. Soc. Jpn Volume: 82, 021007 Pages: 1-18
  • DOI: 10.7566/JPSJ.82.021007
  • Peer Reviewed
• [Journal Article] Magnetic Phase Diagrams of YVO_3 and TbVO_3 under High Pressure (2012)
  • Author(s): Daisuke Bizen, Hironori Nakao, Kazuaki Iwasa, Youichi Murakami, Toyotaka Osakabe, Jun Fujioka, Toshio Yasue, Shigeki Miyasaka, and Yoshinori Tokura
  • Journal Title: J. Phys. Soc. Jpn Volume: 81, 024715 Pages: 1-6
  • DOI: 10.1143/JPSJ.81.024715
  • Peer Reviewed
• [Journal Article] Origin of the Large Polarization in Multiferroic YMnO_3 Thin Films Revealed by Soft- and Hard-X-Ray Diffraction (2012)
  • Author(s): H. Wadati, J. Okamoto, M. Garganourakis, V. Scagnoli, U. Staub, Y. Yamasaki, H. Nakao, Y. Murakami, M. Mochizuki, M. Nakamura, M. Kawasaki, and Y. Tokura
  • Journal Title: Phys. Rev. Lett Volume: 108, 047203 Pages: 1-5
  • URL: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.108.047203
  • Peer Reviewed
• [Journal Article] Polarization-analyzed resonant inelastic x-ray scattering of the orbital excitations in KCuF_3 (2011)
  • Author(s): K. Ishii, S. Ishihara, Y. Murakami, K. Ikeuchi, K. Kuzushita, T. Inami, K. Ohwada, M. Yoshida, I. Jarrige, N. Tatami, S. Niioka, D. Bizen, Y. Ando, J. Mizuki, S. Maekawa, and Y. Endoh
  • Journal Title: Phys. Rev. B Volume: 83, 241101 Pages: 1-4
  • DOI: 10.1103/PhysRevB.83.241101
  • Peer Reviewed
• [Journal Article] Orbital Ordering of Intermediate-Spin State of Co_3+ in Sr_3YCo_4O_<10.5> (2011)
  • Author(s): H. Nakao, T. Murata, D. Bizen, Y. Murakami, K. Ohoyama, K. Yamada, S. Ishiwata, W. Kobayashi, and I. Terasaki
  • Journal Title: J. Phys. Soc. Jpn Volume: 80, 023711 Pages: 1-4
  • DOI: 10.1143/JPSJ.80.023711
  • Peer Reviewed
• [Presentation] マルチフェロイクス物質Gd0.5Tb0.5MnO3におけるX 線誘起相転移 (2014)
  • Author(s): 山崎裕一,中尾裕則,村上洋一,十倉好紀
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学湘南キャンパス
  • Year and Date: 20140327-30
• [Presentation] La_<1.5>Ca_<0.5>CoO_4 の大きな軌道モーメントを持つCo2+高スピン状態の反強磁性秩序 (2013)
  • Author(s): 岡本淳,中尾裕則,山崎裕一,和達大樹,田中新,酒巻真粧子,雨宮健太,久保田正人,村上洋一, 堀金和正, 山田和芳
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 徳島大学常三島キャンパス
  • Year and Date: 20130925-28
• [Presentation] Soft X-ray diffractometer with a 7.5-T superconducting magnet (2013)
  • Author(s): J. Okamoto, H. Nakao, Y. Yamasaki, T. Sudayama, K. Kobayashi, Y. Takahashi, M. Kubota, R. Kumai, and Y. Murakami
  • Organizer: Light and Particle Beams in Materials Science (LPBMS) 2013
  • Place of Presentation: Tsukuba, Japan
  • Year and Date: 20130829-31
• [Presentation] Antiferromagnetic order of the Co^<2+> high-spin state with a large orbital angular momentum in La_<1.5>Ca_<0.5>CoO_4 (2013)
  • Author(s): Jun Okamoto
  • Organizer: REXS2013
  • Place of Presentation: oxford, UK
  • Year and Date: 20130715-19
• [Presentation] 超伝導マグネット搭載軟X 線散乱装置の開発 (2013)
  • Author(s): 岡本淳,中尾裕則,須田山貴亮,山崎裕一,小林賢介,高橋由香里,村上洋一
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学 東広島キャンパス
  • Year and Date: 20130326-29
• [Presentation] 室温強磁性Sr_3YCo_4O_<10.5> の軌道秩序・磁気散乱の観測 (2013)
  • Author(s): 岡本淳、中尾裕則、小林航、石渡晋太郎、田中新、寺崎一郎、村上洋一
  • Organizer: 第26回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 名古屋大学
  • Year and Date: 20130112-14
• [Presentation] LaCoO_3 薄膜におけるスピン状態秩序の観測 (2013)
  • Author(s): 山崎裕一、藤岡淳、須田山貴亮、岡本淳、中尾裕則、熊井玲児、村上洋一、中村優男、川崎雅司、十倉好紀
  • Organizer: 第26回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 名古屋大学
  • Year and Date: 20130112-14
• [Presentation] 共鳴軟X線散乱によるスピン秩序の観測 (2012)
  • Author(s): 中尾裕則
  • Organizer: 日本結晶学会年会及び総会
  • Place of Presentation: 東北大学 片平キャンパス
  • Year and Date: 20121025-26
• [Presentation] 共鳴軟X線小角散乱による(Fe,Co)Si の磁気散乱観測 (2012)
  • Author(s): 山崎裕一,中尾裕則,岡本淳,村上洋一,久保田正人,于秀珍,柴田基洋,金澤直也,小野瀬佳文,十倉好紀
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学 西宮上ケ原キャンパス
  • Year and Date: 20120324-27
• [Presentation] 軌道秩序(多極子秩序)観測のための共鳴X線散乱法の発展 (2011)
  • Author(s): 村上洋一
  • Organizer: 日本物理学会 2011年秋季大会
  • Place of Presentation: 富山大学五福キャンパス
  • Year and Date: 20110921-24
• [Presentation] La_<0.5>Sr_<1.5>MnO_4 における電荷・軌道秩序に対する不純物効果の置換物質依存性 (2011)
  • Author(s): 八巻佑樹,中尾裕則,山崎裕一,村上洋一,金子良夫,十倉好紀
  • Organizer: 日本物理学会 2011年秋季大会
  • Place of Presentation: 富山大学五福キャンパス
  • Year and Date: 20110921-24
• [Presentation] 巨大磁気抵抗効果を示す人工超格子(LaMnO_3)_2(SrMnO_3)_2 の構造物性研究 (2011)
  • Author(s): 中尾裕則,山田浩之,岩佐和晃,山崎裕一,村上洋一,澤彰仁
  • Organizer: 日本物理学会 第66回年次大会
  • Place of Presentation: 新潟大学五十嵐キャンパス
  • Year and Date: 20110325-28
• [Book] Frustration effect in strongly correlated electron system with orbital degre of freedom in "The Jahn-Teller effect - Fundamentals and Implications for Physics and Chemistry" Springer Series in Chemical Physics, Vol. 97 (2010)
  • Author(s): S. Ishihara, H. Koppel, D. R. Yarkony, H. Barentzen (Eds.)
  • Total Pages: 727-742
  • Publisher: Springer-Verlag
• [Remarks] 高エネルギー加速器研究機構 物質構造科学研究所 構造物性研究センター
  • URL: http://cmrc.kek.jp/
• [Remarks] 東北大学大学院 理学研究科 物理学専攻物質構造物理研究室
  • URL: http://calaf.phys.tohoku.ac.jp/