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2009 Fiscal Year Annual Research Report

超高圧下における元素の超伝導化の研究

Research Project

Project/Area Number 19104009
Research InstitutionOsaka University

Principal Investigator

清水 克哉  Osaka University, 極限量子科学研究センター, 教授 (70283736)

Co-Investigator(Kenkyū-buntansha) 大石 泰生  (財)高輝度光科学研究センター, 利用促進部門I, 主幹研究員 (20344400)
加賀山 朋子  大阪大学, 極限量子科学研究センター, 准教授 (40274675)
長柄 一誠  大阪大学, 基礎工学研究科, 助教 (10135676)
Keywords圧力誘起超伝導 / 超高圧 / 元素 / 軽金属 / X線構造解析 / 第一原理計算
Research Abstract

(水素の超高密度圧縮実験)寒剤充填装置に水素充填用加圧装置を装着し、水素を高圧装置(ダイヤモンドアンビルセル)に封入して加圧実験を試行した。SPring-8において高圧下のX線回折実験と下記に示す光学装置によってラマン分光測定を同時に実施した。他グループの先行実験を検証した。
上回る圧力発生は達成しなかったが、より精密な電気抵抗や構造研究の準備を完了できた。
(軽金属元素の超伝導)リチウムの超伝導-半導体転移を発見しこの結果はNature誌に掲載された。25Kを超える超伝導転移温度を発生するカルシウムの160GPa以上の高圧構造について新構造を複数発見した。下記の理論グループの計算から予測される構造に一致した。
(磁性金属元素の超伝導探索)ユーロピウムの反強磁性転移の消失と超伝導転移の発現を詳細に調べるために、圧力分布の少ない微細電極によって電気抵抗測定を行った。イッテリビウムについても30GPa付近まで超伝導探索を行った。
(超高圧下のX線構造解析)SPring-8の超高圧実験ステーションにX線屈折レンズと搭載用ゴニオメータを導入した。これによって軽元素のX線とラマン分光などの光学測定との同時測定を可能になった。水素の超高密度構造解析とラマン分光実験を低温下で同時に達成した。
(結晶構造と超伝導の理論予測)超高圧下のカルシウムの結晶構造と超伝導転移温度について第一原理電子状態計算によって予測した。上記の通り、実験結果を非常に良く説明かつ予測できた。
(圧力発生技術開発)人工ナノ多結晶ダイヤモンドのアンビルとしての応用の可能性を調べるため、超高圧加圧試験を行った。比較的大容量で高圧が達成できることを明らかにした。
(中間研究会の開催)中間研究会を開催し、これまでの研究成果の総括と後半の研究計画を策定した。

  • Research Products

    (44 results)

All 2010 2009

All Journal Article (15 results) (of which Peer Reviewed: 14 results) Presentation (29 results)

  • [Journal Article] Electrical Conductivities of Pyrolitic Mantle and MORB Materials up to the Lowermost Mantle Conditions2010

    • Author(s)
      K.Ohta, et al.
    • Journal Title

      Earth and Planetary Science Letters 289

      Pages: 497-502

    • Peer Reviewed
  • [Journal Article] Direct observation of a pressure-induced metal-to-semiconductor transition in lithium2009

    • Author(s)
      T.Matsuoka, et al.
    • Journal Title

      Nature 458

      Pages: 186-189

    • Peer Reviewed
  • [Journal Article] Pressure-induced superconducting state in crystalline boron nanowires2009

    • Author(s)
      L.Sun et, al.
    • Journal Title

      Phys.Rev.B 79

      Pages: 140505-1-4

    • Peer Reviewed
  • [Journal Article] Pressure-Induced Superconducting State of Europium Metal at Low Temperatures2009

    • Author(s)
      M.Debessai, et al.
    • Journal Title

      Phys.Rev.Lett. 102

      Pages: 197002-1-4

    • Peer Reviewed
  • [Journal Article] Magnetic and Superconducting Properties of a Pressure-Induced Superconductor CePd_5Al_22009

    • Author(s)
      F.Honda, et al.
    • Journal Title

      Physica B : Condensed Matter 404

      Pages: 3202-3205

    • Peer Reviewed
  • [Journal Article] Shock Hugoniot and temperature data for polystyrene obtained with quartz standard2009

    • Author(s)
      N.Ozaki, et al.
    • Journal Title

      Physics of Plasma 16

      Pages: 062702-1-6

    • Peer Reviewed
  • [Journal Article] Pressere Induced Phase Transformation of Ba_8Ga_16Ge_30 Clathrate Studied by X-ray Diffraction and Raman Spectroscopy2009

    • Author(s)
      T.Kum
    • Journal Title

      Journal of Applied Physics 107

      Pages: 013517-1-7

    • Peer Reviewed
  • [Journal Article] Pressure evolution of the low-temperature crystal structure and bonding of the superconductor FeSe (Tc=37K)2009

    • Author(s)
      S.Margadonna, et al.
    • Journal Title

      Phys.Rev.B 80

      Pages: 064506-1-6

    • Peer Reviewed
  • [Journal Article] Raman and X-ray Diffraction Studies of Cationic Type-I Clathrate I_8Sb_8Ge_38 : Pressure-Induced Phase Transitions and Amorphization2009

    • Author(s)
      H.Shimizu, et al
    • Journal Title

      Journal of Applied Physics 105-4

      Pages: 31-34

    • Peer Reviewed
  • [Journal Article] Structure of Pressure-Induced Amorphous Form of SnI_4 at High Pressure2009

    • Author(s)
      A.Ohmra, et al.
    • Journal Title

      Physical Review B 80

      Pages: 054201-1-5

    • Peer Reviewed
  • [Journal Article] Analysis of phonon modes strongly coupled to electrons in high Tcsuperconducting phases of calcium2009

    • Author(s)
      T.Ishikawa, et al.
    • Journal Title

      J.Phys. : Conf.Ser. 150

      Pages: 052078-1-4

    • Peer Reviewed
  • [Journal Article] Redox functionality mediated by adsorbed oxygen on a Pd oxide film over a Pd (100) thin structure : a first-principles study2009

    • Author(s)
      K.Kusakabe, et al.
    • Journal Title

      J.Phys. : Condens.Matter 21

      Pages: 485003-1-7

    • Peer Reviewed
  • [Journal Article] Ab Initio Study on the Origin of the High Superconducting Transition Temperature in Calcium under High Pressure2009

    • Author(s)
      T.Ishikawa, et al.
    • Journal Title

      High Pressure Research 29

      Pages: 204-207

    • Peer Reviewed
  • [Journal Article] V ariational density-functional perturbation theory with ultrasoft pseudopotentials2009

    • Author(s)
      I.Hamada, et al.
    • Journal Title

      J.Compt. Theor. Nano. 6

      Pages: 1-9

    • Peer Reviewed
  • [Journal Article]2009

    • Author(s)
      清水克哉
    • Journal Title

      超伝導ハンドブック(朝倉書店)

      Pages: 214-217

  • [Presentation] 高圧力下におけるイッテルビウムの電気抵抗測定2010

    • Author(s)
      萩原稔也, 他
    • Organizer
      日本物理学会 第65回年次大会
    • Place of Presentation
      岡山
    • Year and Date
      2010-03-21
  • [Presentation] V3Siの超伝導の圧力依存性II2010

    • Author(s)
      田中茂揮, 他
    • Organizer
      日本物理学会 第65回年次大会
    • Place of Presentation
      岡山
    • Year and Date
      2010-03-20
  • [Presentation] 高濃度ボロンドープダイヤモンド単結晶薄膜の超伝導転移温度とキャリア密度の圧力依存性2010

    • Author(s)
      沖尚浩, 他
    • Organizer
      日本物理学会 第65回年次大会
    • Place of Presentation
      岡山
    • Year and Date
      2010-03-20
  • [Presentation] Pressure-induced metallization and superconductivity in halogen molecular crystals and related systems2010

    • Author(s)
      H.Nguyen, et al.
    • Organizer
      5th ?JAEA Symposium on Synchrotron Radiation ?Research-Material Science on Metal Hydride-
    • Place of Presentation
      Hyogo
    • Year and Date
      2010-02-25
  • [Presentation] Photoconductivity in Compressed Transparent Yttrium Hydride2010

    • Author(s)
      Z.Chi, et al.
    • Organizer
      5th JAEA Symposium on Synchrotron Radiation? Research-Material Science on Metal Hydride-
    • Place of Presentation
      Hyogo
    • Year and Date
      2010-02-25
  • [Presentation] Pressure-induced metallization and superconductivity in halogen molecular crystals and related systems2009

    • Author(s)
      K.Shimizu, et al.
    • Organizer
      2nd SKLSHM-KYOKUGEN WorkshoP
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] Structure analysis and phase transitions under ultra high pressure in SPring-82009

    • Author(s)
      Y.Ohishi, et al.
    • Organizer
      2nd SKLSHM-KYOKUGEN Workshop
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] Thermal Expansion and Magnetostriction at High Pressure2009

    • Author(s)
      T.Kagayama, et al.
    • Organizer
      2nd SKLSHM-KYOKUGEN Workshop
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] Pressure-Temperature Phase Diagram of Superconducting Clathrate Ba_24Ge_1002009

    • Author(s)
      A.Miyakse, et al.
    • Organizer
      2nd SKLSHM-KYOKUGEN Workshop
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] Crystal structure of the high Pressure Phase of Calcium Having 25K Superconductivity2009

    • Author(s)
      Y.Nakamoto, et al.
    • Organizer
      2nd SKLSHM-KYOKUGEN Workshop
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] Photoconductivity in compressed transparent Yttrium Hydride2009

    • Author(s)
      Z.Chi, et al.
    • Organizer
      2nd SKLSHM-KYOKUGEN WorkshoP
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] The pressure induced Insulator-metal transition of yttrium tri-hydride (YH3).2009

    • Author(s)
      H.Nguyen, et al.
    • Organizer
      2nd SKLSHM-KYOKUGEN Workshop
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] Pressure dependence of TN and superconductivity in Eu2009

    • Author(s)
      S.Tatsukawa, et al.
    • Organizer
      2nd SKLSHM-KYOKUGEN Workshop
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] Superconductivity in α-rhombohedral Boron at Mbar Pressure2009

    • Author(s)
      Y.Hashimoto, et al.
    • Organizer
      2nd SKLSHM-KYOUGEN Workshop
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] High Pressure Synthesis and Electrical Resistance Measurement of Ba_1-xKxBiO_32009

    • Author(s)
      K.Nakama, al.
    • Organizer
      2nd SKLSHM-KYOKUGEN Workshop
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-12-09
  • [Presentation] 超高圧下てIのα-rhombohedral boronの電気抵抗測定2009

    • Author(s)
      橋本祥史, 他
    • Organizer
      配列ナノ空間を利用した新物質科学第二回若手研究会
    • Place of Presentation
      新潟
    • Year and Date
      2009-11-02
  • [Presentation] V3Siの超伝導の圧力依存性2009

    • Author(s)
      田中茂揮, 他
    • Organizer
      日本物理学会 2009年秋季大会
    • Place of Presentation
      熊本
    • Year and Date
      2009-09-28
  • [Presentation] ボロンドープダイヤモンドの超伝導転移温度の圧力依存性2009

    • Author(s)
      沖尚浩, 他
    • Organizer
      日本物理学会 2009年秋季大会
    • Place of Presentation
      熊本
    • Year and Date
      2009-09-25
  • [Presentation] 超高圧力の科学と技術が拓く物質科学2009

    • Author(s)
      清水克哉
    • Organizer
      G-COE若手秋の学校「新しい量子物質・物性・機能の研究」
    • Place of Presentation
      滋賀
    • Year and Date
      2009-09-15
  • [Presentation] Insulator to metal transition in compressed YH x(x~3)2009

    • Author(s)
      T.Matsuoka, et al.
    • Organizer
      European High Pressure Research Group meeting
    • Place of Presentation
      Pari, France
    • Year and Date
      2009-09-10
  • [Presentation] High pressure induced superconductivity in light elements2009

    • Author(s)
      K.Shimizu
    • Organizer
      The 9th International Conference on Materials and ?Mechanisms of Superconductivity (M2S-IX)
    • Place of Presentation
      Tokyo
    • Year and Date
      2009-09-10
  • [Presentation] Wide angle X-ray diffraction for shocked single crystal2009

    • Author(s)
      Y.Hironaka, et al.
    • Organizer
      Joint AIRAPT-22 & HPCJ-50
    • Place of Presentation
      Tokyo
    • Year and Date
      2009-07-30
  • [Presentation] Multiple Shock Compression of Diamond Foils with Shaped Laser Pulse2009

    • Author(s)
      K.Shigemori, et al.
    • Organizer
      Joint AIRAPT-22 & HPCJ-50
    • Place of Presentation
      Tokyo
    • Year and Date
      2009-07-30
  • [Presentation] Pressure effect of superconducting transition temperature for Boron-Doped (111) Diamond films2009

    • Author(s)
      N.Oki, et al.
    • Organizer
      Joint AIRAPT-22 & HPCJ-50
    • Place of Presentation
      Tokyo
    • Year and Date
      2009-07-30
  • [Presentation] Static compression experiments using phosphor bronze gasket and new anvil material for coupling technique of laser-shock and precompression target2009

    • Author(s)
      T.Kimura, et al.
    • Organizer
      Join AIRAPT-22 & HPCJ-50
    • Place of Presentation
      Tokyo
    • Year and Date
      2009-07-30
  • [Presentation] Metal to Semiconductor Transition in Dense Lithium2009

    • Author(s)
      T.Matsuoka, et al.
    • Organizer
      Joint AIRAPT-22 & HPCJ-50
    • Place of Presentation
      Tokyo
    • Year and Date
      2009-07-28
  • [Presentation] High-Pressure/Low-Temperature X-ray Diffractometer combined with Raman spectrometer at BL10XU of SPring-82009

    • Author(s)
      Y.Ohishi, et al.
    • Organizer
      Joint AIRAPT-22 & HPCJ-50
    • Place of Presentation
      Tokyo
    • Year and Date
      2009-07-28
  • [Presentation] Pressure-induced Superconductivity in Crystalline Boron Nanowires2009

    • Author(s)
      L.Sun, et al.
    • Organizer
      Joint AIRAPT-22 & HPCJ-50
    • Place of Presentation
      Tokyo
    • Year and Date
      2009-07-28
  • [Presentation] Diamond Anvil Using Nano-Polycrystalline Diamond for the High-Pressure Generation2009

    • Author(s)
      Y.Nakamoto, et al.
    • Organizer
      Joint AIRAPT-22 & HPCJ-50
    • Place of Presentation
      Tokyo
    • Year and Date
      2009-07-28

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Published: 2011-06-16   Modified: 2016-04-21  

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