Itinerant electron nanomagnetism -Photoinduced magnetism accompanied by itinerant electrons-

• Project/Area Number: 20540327
• 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: Hokkaido University
• Principal Investigator: YAMAMOTO Shoji 北海道大学, 大学院・理学研究院, 教授 (90252551)
• Project Period (FY): 2008 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 遷移金属錯体 / 芳香族有機高分子 / 単分子磁石 / 電化密度波 / 光誘起相転移 / 遍歴電子磁性 / 群論 / 核スピン-格子緩和 / 光磁性体 / モリブデン錯体 / 磁化ダイナミクス / 時間依存HF法 / NMR / 磁性 / 光物性 / ハロゲン架橋遷移金属錯体 / ナノチューブ / ポリアセン / シアノ架橋銅モリブデン化合物 / 光誘起磁性 / 時間依存ハートリィ・フォック法 / クラスター磁性体

Research Abstract

We have theoretically characterized nanotubular halogen-bridged platinum complexes in cooperation with experimental research groups. Half-metallic charge-density-wave states as well as novel mixed-valent ground states were revealed. We have found out photoinduced phase transitions of one-way aspect in polyacene, which consists of linearly fused benzene rings. Strucural isomers of the so-called cis and trans types are energetically degenerate but optically distinguishable and therefore the present findings may open a way to a brandnew photochromic device. We have further constructed a nuclear-magnetic-relaxation theory for the field-induced level crossings in single-molecular ring antiferromagnets. Novel NMR observations in octanuclear chromic wheels were theoretically solved.

Research Products

• [Journal Article] Photoinduced structural phasetransitions in polyacene (2011)
  • Author(s): S. Yamamoto
  • Journal Title: J. Phys. Soc. Jpn Volume: 80 Pages: 1-13
  • NAID: 40018947243
  • Peer Reviewed
• [Journal Article] Bottom-up realization of a porousmetal-organic nanotubular assembly (2011)
  • Author(s): K. Otsubo, Y. Wakabayashi, J. Ohara, S. Yamamoto, H. Matsuzaki, H. Okamoto, K. Nitta, T. Uruga and H. Kitagawa
  • Journal Title: Nature Mater Volume: 10 Pages: 291-295
  • Peer Reviewed
• [Journal Article] Bottom-up realization of a porous metal-organic nanotubular assembly (2011)
  • Author(s): K.Otsubo, 他9名
  • Journal Title: Nature Materials Volume: 10 Pages: 291-295
  • Peer Reviewed
• [Journal Article] Photoinduced structural phase transitions in polyacene (2011)
  • Author(s): S.Yamamoto
  • Journal Title: Journal of the Physical Society of Japan Volume: 80
  • NAID: 40018947243
  • Peer Reviewed
• [Journal Article] Ground-state properties of a Peierls-Hubbard triangular prism (2010)
  • Author(s): S. Yamamoto, J. Ohara, M. Ozaki
  • Journal Title: J. Phys. Soc. Jpn Volume: 79 Pages: 1-8
  • NAID: 40017072122
  • Peer Reviewed
• [Journal Article] Ground-state properties of a Peierls-Hubbard triangular prism. (2010)
  • Author(s): S.Yamamoto, J.Ohara, M.Ozaki
  • Journal Title: J.Phys.Soc.Jpn. 79
  • NAID: 40017072122
  • Peer Reviewed
• [Journal Article] Optical distinction and photoinduced phase transition between dgenerate ground states of polyacene (2010)
  • Author(s): S.Yamamoto, J.Ohara
  • Journal Title: Physica B Volume: 405
  • Peer Reviewed
• [Journal Article] Bottom-up realization of a porous metal-organic nanotubular assembly (2010)
  • Author(s): K.Otsubo, Y.Wakabayashi, J.Ohara, S.Yamamoto, H.Matsuzaki, H.Okamoto, K.Nitta, T.Uruga, H.Kitagawa
  • Journal Title: Nature Materials Volume: 10(印刷中)
  • Peer Reviewed
• [Journal Article] Ground-state properties of a Peierls-Hubbard triangular prism (2010)
  • Author(s): S.Yamamoto, J.Ohara
  • Journal Title: Journal of the Physical Society of Japan 79
  • NAID: 40017072122
  • Peer Reviewed
• [Journal Article] Optical distinction and photoinduced phase transition between Degenerate ground states of polyacene (2010)
  • Author(s): S.Yamamoto, J.Ohara
  • Journal Title: Physica B (印刷中) Pages: 4-4
  • Peer Reviewed
• [Journal Article] Competing ground states of a Peierls-Hubbard nanotube (2009)
  • Author(s): J. Ohara, S. Yamamoto
  • Journal Title: Europhys. Lett Volume: 87 Pages: 1-6
  • NAID: 120001578869
  • Peer Reviewed
• [Journal Article] Competing ground states of a Peierls-Hubbard nanotube. (2009)
  • Author(s): J.Ohara, S.Yamamoto
  • Journal Title: Europhys.Lett. 87
  • NAID: 120001578869
  • Peer Reviewed
• [Journal Article] Multichanneled relaxation of halogen-bridged diplatinum chain complexes photoexcited. (2009)
  • Author(s): S.Yamamoto, J.Ohara
  • Journal Title: Phys.Stat.Solidi C 6 Pages: 144-148
  • Peer Reviewed
• [Journal Article] Competing ground states of a Peierls-Hubbard nanotube (2009)
  • Author(s): J.Ohara, S.Yamamoto
  • Journal Title: Europhysics Letters 87
  • NAID: 120001578869
  • Peer Reviewed
• [Journal Article] Optical observations of new halogen-bridged platinum complexes assembled within a ladder lattice (2009)
  • Author(s): S. Yamamoto, J. Ohara
  • Journal Title: J. Mater. Sci. : Mater. Electron 20
  • Peer Reviewed
• [Journal Article] Optical characterization of groundstates of polyacene (2008)
  • Author(s): S. Yamamoto
  • Journal Title: Phys. Rev Volume: B78 Pages: 1-7
  • Peer Reviewed
• [Journal Article] Photoproduction of spin and chargecarriers in halogen-bridged binuclearplatinum chain complexes (2008)
  • Author(s): S. Yamamoto, J. Ohara
  • Journal Title: J. Phys.: Condens. Matter Volume: 20 Pages: 1-9
  • Peer Reviewed
• [Journal Article] Optical characterization of ground states of polyacene. (2008)
  • Author(s): S.Yamamoto
  • Journal Title: Phys.Rev.B 78
  • Peer Reviewed
• [Journal Article] Photoproduction of spin and charge carriers in halogen-bridged binuclear platinum chain complexes. (2008)
  • Author(s): S.Yamamoto, J.Ohara
  • Journal Title: J.Phys. : Condens.Matter 78
  • Peer Reviewed
• [Journal Article] Photoproduction of spin and charge carriers in halogen-bridged binuclear platinum chain complexes (2008)
  • Author(s): S. Yamamoto, J. Ohara
  • Journal Title: J. Phys. : Condens. Matter 20
  • Peer Reviewed
• [Journal Article] Optical characterization of ground states of polyacene (2008)
  • Author(s): S. Yamamoto
  • Journal Title: Phys. Rev. B 78
  • Peer Reviewed
• [Presentation] 正方晶系双錐体型光磁性体Cu_2[Mo(CN)_8]の競合磁性相 (2012)
  • Author(s): 山本昌司,大原潤
  • Organizer: 日本物理学会物性分野秋季大会
  • Place of Presentation: 関西学院大学西宮上ヶ原キャンパス
  • Year and Date: 2012-03-24
• [Presentation] ポリアセン縮退基底状態の光学制御 (2011)
  • Author(s): 山本昌司
  • Organizer: 日本物理学会物性分野秋季大会
  • Place of Presentation: 富山大学五福キャンパス
  • Year and Date: 2011-09-23
• [Presentation] ポリアセン縮退基底状態の光学制御 (2011)
  • Author(s): 山本昌司
  • Organizer: 日本物理学会2011年物性分野秋季大会
  • Place of Presentation: 富山大学(富山市)
  • Year and Date: 2011-09-23
• [Presentation] [Cr8F8Piv16]のレベル交差をNMRで観る (2011)
  • Author(s): 山本昌司
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-27
• [Presentation] Photomagnetism in a dicopper octa cyanomolybdate (2011)
  • Author(s): S. Yamamoto, J. Ohara
  • Organizer: International Workshop on Dynamics and Manipulation of Quantum Systems
  • Place of Presentation: Hongo, Tokyo, Japan
  • Year and Date: 2011-02-24
• [Presentation] Photomagnetism in a dicomer octacvanomolvbdate (2011)
  • Author(s): S.Yamamoto, J.Ohara
  • Organizer: International Workshop on Dynamics and Manipulation of Quantum Sysytems 2010
  • Place of Presentation: 東京大学山上会館
  • Year and Date: 2011-02-15
• [Presentation] [Cr^8F^8Piv_16]のレベル交差をNMRで観る (2011)
  • Author(s): 山本昌司
  • Organizer: 物理学会第66回年次大会
  • Place of Presentation: 新潟大学
• [Presentation] Photomagnetism in a dicopper octacyano-molybdate (2011)
  • Author(s): 山本昌司
  • Organizer: International Workshop on Dynamics and Manipulation of Quantum Sysytems 2010
  • Place of Presentation: Tokyo, Japan.
• [Presentation] ハロゲン架橋白金錯体ナノチューブに観る多彩な電子相(招待講演) (2010)
  • Author(s): 山本昌司
  • Organizer: 日本物理学会物性分野秋季大会
  • Place of Presentation: 大阪府立大学中百舌鳥キャンパス
  • Year and Date: 2010-09-24
• [Presentation] ハロゲン架橋白金錯体ナノチューブに観る多彩な電子相 (2010)
  • Author(s): 山本昌司
  • Organizer: 日本物理学会2010年物性分野分科会
  • Place of Presentation: 大阪府立大学 招待講演
  • Year and Date: 2010-09-24
• [Presentation] シアノ架橋Cu(II)Mo(IV)錯体の磁気特性-toy模型による基底状態相図- (2010)
  • Author(s): 大原潤、山本昌司
  • Organizer: 日本物理学会2010年物性分野分科会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-23
• [Presentation] シアノ架橋Cu(II)Mo(IV)錯体の磁気特性-光照射による自発磁化の発現- (2010)
  • Author(s): 大原潤、山本昌司
  • Organizer: 日本物理学会2010年物性分野分科会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-23
• [Presentation] Effective Dzyalonshinsky-Moriya interactions in an octanuclear chromium(III) antiferromagnetic ring : NMR observ-ations of the quantum level crossing (2010)
  • Author(s): S. Yamamoto
  • Organizer: International Workshop on Statistical Physics of Quantum Systems
  • Place of Presentation: Komaba, Tokyo, Japan
  • Year and Date: 2010-08-03
• [Presentation] Effective Dzyalonshiriski-Moriya interactions in an octanuclear chromium(III) antiferromagnetic ring : NMR observations of the quantum level crossing (2010)
  • Author(s): S.Yamamoto
  • Organizer: International Workshop on Statistical Physics of Quantum Systems
  • Place of Presentation: 東京大学生産技術研究所
  • Year and Date: 2010-08-03
• [Presentation] 3角柱MX錯体におけるMott-Peierls絶縁相競合 (2010)
  • Author(s): 大原潤、山本昌司
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-21
• [Presentation] ポリアセンの光誘起構造相転移 (2010)
  • Author(s): 山本昌司
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-21
• [Presentation] ハロゲン架橋白金錯体ナノチューブに観る多彩な電子相(領域7・6・11特別講演) (2010)
  • Author(s): 山本昌司
  • Organizer: 物理学会物性分野秋季大会
  • Place of Presentation: 大阪府立大学
• [Presentation] ポリアセンの光誘起構造相転移 (2010)
  • Author(s): 山本昌司
  • Organizer: 物理学会第65回年次大会
  • Place of Presentation: 岡山大学
• [Presentation] 梯子型ハロゲン架橋白金錯体における光誘起ダイナミクス (2009)
  • Author(s): 大原潤、山本昌司
  • Organizer: 第20回光物性研究会
  • Place of Presentation: 大阪市立大学
  • Year and Date: 2009-12-11
• [Presentation] Photoinduced structural phase transitions in polyacene (2009)
  • Author(s): S.Yamamoto
  • Organizer: International Workshop on Dynamics and Manipulation of Quantum Systems 2009
  • Place of Presentation: 東京大学本郷キャンパス小柴ホール
  • Year and Date: 2009-10-14
• [Presentation] S=2一次元ハイゼンベルグ型反強磁性体MnCl_3(bpy)の磁性とESR (2009)
  • Author(s): 井筒祐一、萩原正幸、柏木隆成、本多善太郎、山本昌司
  • Organizer: 日本物理学会2009年物性分野分科会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-27
• [Presentation] 3角柱MX錯体の多彩な電子相 (2009)
  • Author(s): 山本昌司,大原潤
  • Organizer: 日本物理学会物性分野秋季大会
  • Place of Presentation: 熊本大学黒髪キャンパス
  • Year and Date: 2009-09-26
• [Presentation] 梯子型ハロゲン架橋白金錯体の光誘起相転移 (2009)
  • Author(s): 大原潤、山本昌司
  • Organizer: 日本物理学会2009年物性分野分科会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-26
• [Presentation] 3角柱MX錯体の多彩な電子相 (2009)
  • Author(s): 山本昌司、大原潤
  • Organizer: 日本物理学会2009年物性分野分科会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25
• [Presentation] 光で観る3角柱MX錯体の基底状態 (2009)
  • Author(s): 大原潤、山本昌司
  • Organizer: 日本物理学会2009年物性分野分科会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25
• [Presentation] Optical distinction and photoinduced phase transition between degenerate ground states of polyacene (2009)
  • Author(s): S.Yamamoto, J.Ohara
  • Organizer: International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets 2009
  • Place of Presentation: ニセコ・ヒルトン・ホテル
  • Year and Date: 2009-09-13
• [Presentation] Optical distinction and photoinduced phase transition between degenerate ground states of polyacene. (2009)
  • Author(s): S.Yamamoto
  • Organizer: The 8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
  • Place of Presentation: Niseko, Japan.
• [Presentation] Multichanneled relaxation of halogen-bridged diplatinum chain complexes photoexcited (2008)
  • Author(s): S. Yamamoto
  • Organizer: The 8th International Conference on Excitonic Processes in Condensed Matter
  • Place of Presentation: Kyoto University Kyoto/Japan
  • Year and Date: 2008-06-24
• [Remarks]
  • URL: http://phys.sci.hokudai.ac.jp/LABS/busseiRiron/bussei3/index.html
• [Remarks]
  • URL: http://phys.sci.hokudai.ac.jp/LABS/BusseiRiron/bussei3/index.html
• [Remarks]
  • URL: http://phys.sci.hokudai.ac.jp/LABS/BusseiRiron/bussei3/index.html