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2008 Fiscal Year Final Research Report

Mechanism of metal-insulator transition clarified by bulk sensitivephotoelectron spectroscopy

Research Project

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Project/Area Number 18104007
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics I
Research InstitutionOsaka University

Principal Investigator

SUGA Shigemasa  Osaka University, 大学院・基礎工学研究科, 教授 (40107438)

Co-Investigator(Kenkyū-buntansha) SEKIYAMA Akira  大阪大学, 大学院・基礎工学研究科, 助教 (40294160)
Co-Investigator(Renkei-kenkyūsha) IMADA Shin  立命館大学, 理工学部, 教授 (90240837)
YAMASAKI Atsushi  甲南大学, 理工学部, 講師 (50397775)
TSUNEKAWA Masanori  名古屋大学, 物質科学国際研究センター, 研究員 (20403131)
YABASHI Makina  理化学研究所, X線自由電子レーザー計画推進本部, 研究員 (00372144)
OKADA Kouzou  岡山大学, 大学院・自然科学研究科, 准教授 (70194355)
Project Period (FY) 2006 – 2008
Keywords軟X線角度分解光電子分光 / バルク3次元フェルミオロジー / 強相関電子系 / 硬X線光電子分光 / 光電子recoil効果 / 近藤格子効果 / 極低エネルギー超高分解能光電子分光
Research Abstract

電子相関の強い物質系のバルク電子状態を光電子分光で探るには硬X線の利用が最も有効である。我々は8keVの光を用いて温度を変えることで金属-絶縁体転移を起こすV酸化物を中心に、その機構を解明することに成功した。

  • Research Products

    (40 results)

All 2009 2008 2007 2006 Other

All Journal Article (21 results) Presentation (13 results) Remarks (4 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Hard X-ray Photoelectron Spectroscopy of Correlated Electron Systems and Recoil Effects in Photoelectron Emission2009

    • Author(s)
      S.Suga and A.Sekiyama
    • Journal Title

      Euro. Phys. J 169

      Pages: 227-235

  • [Journal Article] Do all nuclei recoil on photoemission in compounds?2009

    • Author(s)
      S.Suga, A.Sekiyama, H.Fujiwara, T. Miyamachi, Y.Nakatsu, S.Imada, P.Baltzer, S.Niitaka, H.Takagi, K.Yoshimura, M.Yabashi, K.Tamasaku, A.Higashiya, T.Ishikawa
    • Journal Title

      New J. Phys (in press)

  • [Journal Article] Electronic Structure of Nd_<2-x>Ce_xCuO_4 and La_<2-x>S_rxCuO_4 Deduced from Cu 2p Photoemission and Photoabsorption2009

    • Author(s)
      K.Okada
    • Journal Title

      J. Phys. Soc. Jpn Vol. 78

      Pages: 034725

  • [Journal Article] Band Jahn-Teller Instability and Formation of Valence Bond Solid in a Mixed-Valent Spinel Oxide LiRh_2O_42008

    • Author(s)
      Y. Okamoto, S. Niitaka, M. Uchida, T. Waki, M. Takigawa, Y. Nakatsu, A. Sekiyama, S. Suga, R. Arita, and H. Takagi
    • Journal Title

      Phys. Rev. Lett 101

      Pages: 086404

  • [Journal Article] Potential and restriction of high resolution, high energy photoemission in 400-8,000 eV for studying strongly correlated electron systems2008

    • Author(s)
      S. Suga
    • Journal Title

      Appl. Phys. A, Appl. Phys A 92

      Pages: 479-485

  • [Journal Article] Ultra-high resolution VUV light source system for extremely low energy photoelectron spectroscopy2008

    • Author(s)
      G. Funabashi, H. Fujiwara, A. Sekiyama, M. Hasumoto, T. Itoh, S. Kimura, P. Baltzer and S. Suga
    • Journal Title

      Jpn. J. Appl. Phys 47

      Pages: 2265-2269

  • [Journal Article] Stability of Electronic States across Metal-Insulator Transition in PrRu_4P_122008

    • Author(s)
      A.Yamasaki, S.Imada, A.Sekiyama, H. Fujiwara, M.Yano, J.Yamaguchi, G. Funabashi, H.Sugawara, D.Kikuchi, H.Sato, T.Muro, A.Higashiya, M.Yabashi, T. Ishikawa, H.Harima and S. Suga
    • Journal Title

      Phys. Rev B 77

      Pages: 16512

  • [Journal Article] Reply to "Comment on"Evidence for strong electronic correlations in the spectra of Sr_2RuO_42008

    • Author(s)
      Z.V.Pchelkina, I.A.Nekrasov, Th.Pruschke, S.Suga, V.I.Anisimov, and D.Vollhardt
    • Journal Title

      Phys. Rev B 77

      Pages: 046102-1-3

  • [Journal Article] Electronic structures of CeRu_2X_2(X=Si, Ge)in the paramagnetic phase by soft x-ray ARPES and hard x-ray photoemission2008

    • Author(s)
      M.Yano, A.Sekiyama, H.Fujiwara, Y.Amano, S.Imada, T.Muro, M.Yabashi, K.Tamasaku, A.Higashiya, T.Ishikawa, Y.Onuki and S. Suga
    • Journal Title

      Phys.Rev B 77

      Pages: 035118-1-8

  • [Journal Article] Reduction of Kondo lattice effects in Yb_<1-x>Lu_xAl_3 observed by soft x-ray photoemission spectroscopy2007

    • Author(s)
      J.Yamaguchi, A.Sekiyama, S.Imada, A.Yamasaki, M.Tsunekawa, T.Muro, T. Ebihara, Y.Onuki and S.Suga
    • Journal Title

      New Jour. Phys 9

      Pages: 317-1-10

  • [Journal Article] Soft X-ray spectroscopy of possibly heavy fermion compound NdOs_4Sb_122007

    • Author(s)
      S.Imada, H.Higashimichi, A.Yamasaki, M.Yano, T.Muro, A.Sekiyama, S.Suga, H. Sugawara, D.Kikuchi, and H.Sato
    • Journal Title

      Phys. Rev B76

      Pages: 153106-1-4

  • [Journal Article] Electron correlation and the metal-insulator transition of the pyrochlore molybdates R_2Mo_2O_7(R=Nd, Sm, Gd, Tb, Y)2007

    • Author(s)
      A.Higashiya, S.Imada, A.Yamasaki, A. Irizawa, A.Sekiyama, S.Suga, Y.Taguchi, M.Iwama, K.Ohgushi, and Y.Tokura
    • Journal Title

      Phys. Rev B75

      Pages: 155106-1-7

  • [Journal Article] Evidence for strong electronic correlation in the spectra of Sr_2RuO_42007

    • Author(s)
      Z.V.Pchelkina, I.A.Nekrasov, Th.Prusschke, A. Sekiyama, S.Suga, V.I.Anisimov and D.Vollhardt
    • Journal Title

      Phys. Rev B75

      Pages: 035122-1-10

  • [Journal Article] Coexistence of strongly mixed valency and heavy-fermion character in SmOs_4Sb_12 studied by soft and hard x-ray spectroscopy2007

    • Author(s)
      A.Yamasaki, S.Imada, H.Higashimichi, H.Fujiwara, T.Saita, T.Miyamachi, A.Sekiyama, H.Sugawara, D.Kikuchi, H.Sato, A.Higashiya, M.Yabashi, K.Tamasaku, D.Miwa, T.Ishikawa and S.Suga
    • Journal Title

      Phys. Rev. Lett 98

      Pages: 156402-1-4

  • [Journal Article] M.Yano, A.Sekiyama, H.Fujiwara, T.Saita, S.Imada, Y.Onuki and S.Suga2007

    • Author(s)
      Three-dimensional bulk fermiology of CeRu_2Ge_2 in the paramagnetic phase by soft x-ray hvdependent (700-860 eV) ARPES
    • Journal Title

      Phys. Rev. Lett 98

      Pages: 036405-1-4

  • [Journal Article] Momentum-Specified Oxygen K Resonant Inelastic X-ray Scattering for Cuprates2007

    • Author(s)
      K. Okada and A. Kotani
    • Journal Title

      J. Phys. Soc. Jpn Vol. 76

      Pages: 123706

  • [Journal Article] Static versus dynamical mean-field theory of Mott antiferromagnets2006

    • Author(s)
      F. Sangiovanni, A.Toschi, E. Koch, K. Held, M. Capone, C. Castellani, O. Gunnarson, S.-K. Mo, J. W. Allen, G.-D. Kim, A. Sekiyama, A. Yamasaki, S. Suga and P. Metcalf
    • Journal Title

      Phys. Rev B 73

      Pages: 205121-1-5

  • [Journal Article] Bulk-sensitive photoemission study of(V^<1-x>M_x)_2O_3(M=Cr, Ti)2006

    • Author(s)
      S.-K. Mo, H.-D. Kim, J. D. Denlinger, J. W. Allen, J.-H. Park, A.Sekiyama, A. Yamasaki, S. Suga, Y. Saitoh, T. Muro, and P. Metcalf
    • Journal Title

      Phys. Rev B 74

      Pages: 165101-1-12

  • [Journal Article] Agreement of Luttinger Liquid signatures in bulk and surface sensitive ARPES spectra of Li_<0.9>Mo_6O_172006

    • Author(s)
      E.Wang, S.-K.Mo, J.W.Allen, H.-D.Kim, J.He, R.Jin, D.Mandrus, A.Sekiyama, M.Tsunekawa and S.Suga
    • Journal Title

      Phys. Rev B 74

      Pages: 113107-1-4

  • [Journal Article] Copper K and Oxygen K Resonant Inelastic X-ray Scattering of one-dimensional cuprates2006

    • Author(s)
      K. Okada and A. Kotani
    • Journal Title

      J.Phys.Soc.Jpn 75

      Pages: 044702

  • [Journal Article] Oxygen 1s Core-Level Photoemission as a Tool to Investigate the Unoccupied Electronic States of Cuprates2006

    • Author(s)
      K. Okada and A. Kotani
    • Journal Title

      J.Phys.Soc.Jpn 75

      Pages: 123703

  • [Presentation] 2次元的電気伝導を示すペロブスカイト型Mn酸化物のバルク敏感光電子分光2009

    • Author(s)
      杉山浩史, 関山明, 菅滋正
    • Organizer
      日本物理学会第64回年次大会
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-27
  • [Presentation] HAXPES of strongly correlated materials : Yb, Sm, and V compounds and presence or absence of recoil effects in some V compounds2008

    • Author(s)
      S.Suga
    • Organizer
      Hard X-ray Photoemission Workshop
    • Place of Presentation
      U.S.A
    • Year and Date
      2008-10-14
  • [Presentation] 重い電子系CeRu2Si2の軟X線角度分解光電子分光によるバンド構造の温度変化2008

    • Author(s)
      矢野正雄, 関山明, 今田真, 室隆桂之, 大貫惇陸, 菅滋正
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2008-09-22
  • [Presentation] Eu<1-x>Sm_xB6の硬X線光電子分光2008

    • Author(s)
      山口淳一, 関山明, 今田真, 石川哲也, 菅滋正
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      岩手大学
    • Year and Date
      2008-09-21
  • [Presentation] V_nO_<2n-1>マグネリ相バナジウム酸化物に対する硬X線光電子分光2008

    • Author(s)
      尾原誠明, 関山明, 今田真, 東谷篤志, 石川哲也, 菅滋正
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      岩手大学
    • Year and Date
      2008-09-21
  • [Presentation] LiV_2O_4の硬X線及び軟X線光電子分光2008

    • Author(s)
      中津嘉隆, 関山明, 藤原秀紀, 矢橋牧名, 菅滋正
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      岩手大学
    • Year and Date
      2008-09-21
  • [Presentation] Au(001)上bcc Co薄膜のSTM/STS観察2008

    • Author(s)
      宮町俊生, 今田真, 川越毅, Fan-Hsiu Chang, 菅滋正
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2008-09-21
  • [Presentation] Hard X-ray photoelectron spectroscopy of correlated electron systems and recoil effects in core and valence photoelectron emission2008

    • Author(s)
      S. Suga
    • Organizer
      Int.Conf.X-ray Spectroscopy
    • Place of Presentation
      Paris, France
    • Year and Date
      2008-06-25
  • [Presentation] Ca_<1.5>Sr_<0.5>RuO_4の硬X線光電分光 : Ca置換がバルク電子状態に与える影響2008

    • Author(s)
      辻林真寛, 関山明, 前野悦輝, 菅滋正
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-23
  • [Presentation] Genuine bulk electronic structures of ruthenates, cuprates, manganites and vanadates revealed by high energy photoelectron spectroscopy2008

    • Author(s)
      S. Suga
    • Organizer
      German Physical Society Meeting
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      2008-02-27
  • [Presentation] Three dimensional Fermiology by soft X-ray ARPES and hard X-ray photoelectron spectroscopy of transition metal- and rare earth-compounds2007

    • Author(s)
      S. Suga
    • Organizer
      2^<nd> Int. Workshop on Materials Science and Nano-Engineering
    • Place of Presentation
      Yumebutai, Japan
    • Year and Date
      2007-12-02
  • [Presentation] Potential and restriction of high resolution high energy photoemission in 400-8,000 eV for studying correlated electron systems, 15th Int. Conf2007

    • Author(s)
      S. Suga
    • Organizer
      Vacuum Ultraviolet Radiation Phys
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      2007-08-01
  • [Presentation] High Energy and High Resolution Photoelectron Spectroscopy in the Hard and Soft X-ray Regions to probe Genuine Bulk Electronic Structures of Strongly2006

    • Author(s)
      S. Suga
    • Organizer
      Correlated Electron Systems, 10^<th> Int. Conf. on Electronic Spectroscopy and Structure
    • Place of Presentation
      Iguassu, Brazil
    • Year and Date
      2006-08-29
  • [Remarks] (1) 本研究は新しい光電子分光技術の開拓によって担保される側面が大きいが, 研究代表者はその開拓への貢献つまり科学技術の基礎研究での功績により第26回島津賞を受賞している。1.日本経済新聞2006年12月8日2.京都新聞2006年12月8日3.日刊工業新聞2006年12月8日

  • [Remarks] (2) また本研究者らの開発した軟X線角度分解光電子分光による3次元フェルミオロジーに昨今世界的注目が高まっている。1.朝日新聞2007年2月2日2.読売新聞2007年1月5日

  • [Remarks] (3) これらの功績は国際的に高く評価され、研究代表者は日本人として初めて、ドイツの国際的な賞であるHelmholtz-Humboldt研究賞を受賞した。1.読売新聞2008年6月30日朝刊2.日経産業新聞2008年6月23日朝刊

  • [Remarks]

    • URL

      http://decima.mp.es.osaka-u.ac.jp/japanese/index.html

  • [Patent(Industrial Property Rights)] 表面原子可視化装置2007

    • Inventor(s)
      関山明, 菅滋正
    • Industrial Property Rights Holder
      国立大学法人大阪大学
    • Industrial Property Number
      特許権特願2007-00523
    • Filing Date
      2007-01-12
  • [Patent(Industrial Property Rights)] 超高分解能希ガス光源2006

    • Inventor(s)
      菅滋正
    • Industrial Property Rights Holder
      国立大学法人大阪大学
    • Industrial Property Number
      特許権特願2006-253181
    • Filing Date
      2006-09-19

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Published: 2010-06-10   Modified: 2016-04-21  

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