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Yb系重い電子化合物における価数ゆらぎと量子臨界現象

Publicly Offered Research

Project AreaEmergence of Heavy Electrons and Their Ordering
Project/Area Number 23102706
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Tokyo

Principal Investigator

松本 洋介  東京大学, 物性研究所, 助教 (90422443)

Project Period (FY) 2011-04-01 – 2013-03-31
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2012: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Keywords重い電子 / 量子臨界現象 / 非フェルミ液体 / 価数揺らぎ / 異方的c-f混成 / 超伝導
Outline of Annual Research Achievements

価数搖動系β-YbAlB4および同じく価数搖動系の多形体α-YbAlB4を対象に、これらの物質の示す強い価数揺らぎの下での量子臨界現象、超伝導、メタ磁性的振舞いの機構の解明を目的とし研究を行っている。本年度は主に以下の結果を得た。
まず、量子臨界性等の起源を明らかにする上で、そもそも何故、これらの系が200 - 300 Kの価数揺らぎの温度スケールより十分低温の約数10 K以下で、近藤格子的な振舞い、すなわちキュリーワイス的な磁化の増大や大きな比熱等を示すのかを明らかにする必要がある。この問いに対する知見がβ-YbAlB4のホール効果測定から得られた。興味深いことに、100 K以下の低温でホール抵抗が磁場に対して非線形になり、これがホール面と低キャリア密度の電子面からなる2バンドモデルによって説明されること、さらに、低温における重い電子の振舞いは低キャリア密度の電子面の寄与によると考えられることが分かった。この系の量子臨界性および超伝導の起源を探る上で重要な知見が得られたと考えられる。
一方、α-YbAlB4のメタ磁性的な振舞いは、磁化容易軸のc軸方向に約3 Tの磁場中で生じる。電気抵抗測定からc軸方向に電流を流した際にメタ磁性磁場において顕著な非フェルミ液体性が確認されること、ab面内電流の場合に非フェルミ液体性は現れないものの、メタ磁性磁場以上の磁場で大きな負の磁気抵抗を示すなど、極めて異方的な振る舞いを示すことが分かった。また極低温比熱測定から、メタ磁性磁場において比熱は発散的な振舞いを示さないが、より高磁場で大きく抑制されること、さらに帯磁率、電気伝導測定の結果と組み合わせて得られるウィルソン比、門脇-ウッズ比は共にメタ磁性磁場の上下で概ね一定値をとるなど、従来の磁気量子臨界点とは異なる何らかの量子臨界性と関連していると考えられる特異な振舞いが明らかになってきた。

Research Progress Status

24年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

24年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (93 results)

All 2013 2012 2011

All Journal Article (22 results) (of which Peer Reviewed: 22 results) Presentation (71 results) (of which Invited: 1 results)

  • [Journal Article] Evidence of a High-Field Phase in PrV2Al20 1n a[100]Magnetic Field2013

    • Author(s)
      Y, Shimura, Y, Ohta, T, Sakakibara, A, Sakai, and S, Nakatsuji
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 4 Pages: 43705-43709

    • DOI

      10.7566/jpsj.82.043705

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] X-ray Diffraction and Absorption Spectroscopy in Pulsed High Magnetic Fields2013

    • Author(s)
      Yasuhiro H. Matsuda
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 82 Issue: 2 Pages: 21009-21009

    • DOI

      10.7566/jpsj.82.021009

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Field Dependence of the Specific Heat in a Heavy-Fermion Superconductor CeIrIn52012

    • Author(s)
      Y. Aoki, S, Kittaka. T, Sakakibara, A, Sakai, S, Nakatsuj i, Y, Tsutsumi, M, Ichioka, and K, Machida
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 81 Issue: Suppl.B Pages: SB014-SB014

    • DOI

      10.1143/jpsjs.81sb.sb014

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low Temperature Properties of the Cubic Kondo Lattice Systems SmTr2A12O (Tr = Ti v Cr)2012

    • Author(s)
      Akito Sakai and Satoru Nakatsuji
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 81 Issue: Suppl.B Pages: SB049-SB049

    • DOI

      10.1143/jpsjs.81sb.sb049

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microscopic Evidence for Long-Range Magnetic Ordering in the I 8 Ground Quartet Systems SmTr2A120 (Tr: Ti, V, Cr)2012

    • Author(s)
      T, U, Ito, W, Higemoto, K. Ninomiya, A, Sakai, and S, Nakatsuji
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 81 Issue: Suppl.B Pages: SB050-SB050

    • DOI

      10.1143/jpsjs.81sb.sb050

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] superconductivity in the rerroduadrupolar State in tne Quadrupolar Rondo Lattice PrTi2A1202012

    • Author(s)
      Akito Sakai, Kentaro Kuga, and Satoru Nakatsuji
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 81 Issue: 8 Pages: 83702-83706

    • DOI

      10.1143/jpsj.81.083702

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Continuous transition between antiferromagnetic insulator and paramagnetic metal in the pyrochlore iridate Eu2Ir2072012

    • Author(s)
      Jun J. Ishikawa, Eoin C. T. O' Farrell, Satoru Nakatsuji
    • Journal Title

      Phys. Rev. B

      Volume: 85 Issue: 24

    • DOI

      10.1103/physrevb.85.245109

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ferroauadrupolar ordering in PrTi2A1202012

    • Author(s)
      T, J. Sato, S, Ibuka, Y, Nambu, T, Yamazaki, T. Hong, A. Sakai, S, Nakatsuji
    • Journal Title

      Phys. Rev. B

      Volume: 86 Issue: 18 Pages: 184419-184427

    • DOI

      10.1103/physrevb.86.184419

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superconducting gap structure of CeIrIn5 from field-angle-resolved measurements of its specific heat2012

    • Author(s)
      橘高俊一郎
    • Journal Title

      Physical Review B

      Volume: 85 Issue: 6

    • DOI

      10.1103/physrevb.85.060505

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evolution of c-f Hybridization and Two-Component Hall Effect in β-YbAlB42012

    • Author(s)
      E. C. T. O' Farrell*, Y. Matsumoto, S. Nakatsuji
    • Journal Title

      Phys. Rev. Lett.

      Volume: 109 Issue: 17

    • DOI

      10.1103/physrevlett.109.176405

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pressure-Induced Heavy Fermion Superconductivity in the Nonmagnetic Quadrupolar System PrTi2Al202012

    • Author(s)
      K. Matsubayashi
    • Journal Title

      Phys. Rev. Lett.

      Volume: 109 Issue: 18 Pages: 187004-187004

    • DOI

      10.1103/physrevlett.109.187004

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Thermal properties of the nonmagnetic cubic I 3 Kondo lattice systems PrTr2Al20 (Tr = Ti, V)2012

    • Author(s)
      Akito Sakai and Satoru Nakatsuj
    • Journal Title

      J. Phys. Conf. Ser.

      Volume: 391 Pages: 12058-12062

    • DOI

      10.1088/1742-6596/391/1/012058

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure and physical properties of single crystal PrCr2A120 and CeM2Al20 (M=V, Cr):Acompari sonofcompoundsadoptingtheCeCr2Al20 structure type2012

    • Author(s)
      Michael J, Kangas, DevinC, Schmitt, Akito Sakai, Satoru Nakatsuji, JuliaY. Chan
    • Journal Title

      Journal of Solid State Chemistry

      Volume: 196 Pages: 274-281

    • DOI

      10.1016/j.jssc.2012.06.035

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] T/B scaling of magnetization in the mixed valent compound β-YbAlB42012

    • Author(s)
      Yosuke Matsumoto
    • Journal Title

      J. Phys. : Conf. Ser.

      Volume: 391 Pages: 012041-012041

    • DOI

      10.1088/1742-6596/391/1/012041

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Shubnikov-de Haas oscillations in the heavy fermion α-YbAlB42012

    • Author(s)
      E.C.T. O'Farrell
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 391 Pages: 012053-012053

    • DOI

      10.1088/1742-6596/391/1/012053

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Suppression of f-electron itinerancy in CeRu_2Si_2 by a strong magnetic field2012

    • Author(s)
      Y. H. Matsuda, T. Nakamura, J. L. Her, S. Michimura, T. Inami, K. Kindo, and T. Ebihara
    • Journal Title

      Phys. Rev. B

      Volume: Vol. 86 Issue: 4 Pages: 1-4

    • DOI

      10.1103/physrevb.86.041109

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] X-ray Spectroscopies in Pulsed High Magnetic Fields: New Frontier with Flying Magnets and Rolling Capacitor Banks2012

    • Author(s)
      Y. Narumi, T. Nakamura, T. Kinoshita, Y. H. Matsuda, and H. Nojiri
    • Journal Title

      Synchrotron Radiation News

      Volume: Vol.25,No.6 Issue: 6 Pages: 12-17

    • DOI

      10.1080/08940886.2012.736833

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anisotropic heavy-Fermi-liquid formation in valence-fluctuatingα-YbAlB_42011

    • Author(s)
      Y. Matsumoto, K. Kuga, T. Tomita, Y. Karaki, and S. Nakatsuji
    • Journal Title

      Physical Review B

      Volume: Vol.84 Issue: 12 Pages: 125126-1

    • DOI

      10.1103/physrevb.84.125126

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum critical Kondo quasiparticles probed by ESR inβ-YbAlB_42011

    • Author(s)
      L. M. Holanda, J. M. Vargas, W. Iwamoto, C. Rettori, S. Nakatsuji, K. Kuga, Z. Fisk, S. B. Oseroff and P. G. Pagliuso
    • Journal Title

      Physical Review Letters

      Volume: Vol.107 Issue: 2 Pages: 1026402-1

    • DOI

      10.1103/physrevlett.107.026402

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kondo Lattice Behavior in the Valence Fluctuating Systems α- and β-YbAlB_42011

    • Author(s)
      Y.Matsumoto
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 80

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anisotropic Electrical Transport in the Heavy Fermion Compound α-YbAlB_42011

    • Author(s)
      K.Kuga
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 80

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Thermoelectric Coefficients of the Quantum Critical β-YbAlB_42011

    • Author(s)
      Y.Machida
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 80

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] β-YbAl1-xFexB4における量子臨界現象と圧力相図2013

    • Author(s)
      冨田崇弘
    • 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
      2013-03-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] 価数揺動物質β-YbAlB4の圧力誘起Ybイオンの価数変化2013

    • Author(s)
      阪口友唯
    • 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
      2013-03-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] 価数揺動物質YbAlB4の174Yb放射光メスバウアー分光法による研究2013

    • Author(s)
      小林寿夫
    • 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
      2013-03-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] 重い電子系化合物β-YbAlB4のNMRによる研究2013

    • Author(s)
      高野俊
    • 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
      2013-03-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] 極低温比熱測定によるYbAlB4の重い電子状態の磁場依存性の研究2013

    • Author(s)
      松本洋介
    • 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
      2013-03-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] α-YbAlB4のメタ磁性と電子輸送特性2013

    • Author(s)
      洪辰杓
    • 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
      2013-03-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] 軌道自由度を持つハニカム型量子磁性体 Ba3CuSb2O9の単結晶合成と基礎物性2013

    • Author(s)
      木村健太
    • 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
      2013-03-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] 希土類スピネル磁性体AYb2S4(A=Cd,Mg)の磁気秩序とフラストレーション2013

    • Author(s)
      入谷健資
    • 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
      2013-03-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] 価数搖動系α-YbAl1-xTxB4(T:遷移金属)における磁性と熱膨張2013

    • Author(s)
      曾根啓太
    • 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
      2013-03-27
    • Related Report
      2012 Annual Research Report
  • [Presentation] PrV2Al20の圧力制御による四極子秩序の研究2013

    • Author(s)
      田中斗志貴
    • 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
      2013-03-27
    • Related Report
      2012 Annual Research Report
  • [Presentation] カゴ状化合物PrV2Al20の極低温磁化と比熱2013

    • Author(s)
      荒木幸治
    • 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
      2013-03-27
    • Related Report
      2012 Annual Research Report
  • [Presentation] 四極子近藤格子系PrTi2Al20の超伝導特性2013

    • Author(s)
      酒井明人
    • 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
      2013-03-26
    • Related Report
      2012 Annual Research Report
  • [Presentation] PrTi2Al20における四極子秩序と超伝導の圧力効果2013

    • Author(s)
      鈴木淳一郎
    • 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
      2013-03-26
    • Related Report
      2012 Annual Research Report
  • [Presentation] 極低温におけるPrTi2Al20の熱輸送特性2013

    • Author(s)
      池浦徹
    • 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
      2013-03-26
    • Related Report
      2012 Annual Research Report
  • [Presentation] 四極子近藤系PrV2Al20における輸送係数の磁場依存性2013

    • Author(s)
      辻本真規
    • 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
      2013-03-26
    • Related Report
      2012 Annual Research Report
  • [Presentation] Overview of Experiments on Intermediate Valent YbAlB4 systems2013

    • Author(s)
      松本洋介
    • Organizer
      ISSPワークショップ「強相関電子系における価数揺らぎと量臨界性」
    • Place of Presentation
      東大物性研究所
    • Year and Date
      2013-02-25
    • Related Report
      2012 Annual Research Report
  • [Presentation] Anisotoropic Metamagnetism in α-YbAlB42013

    • Author(s)
      E. C. T. O’ Farrell
    • Organizer
      ISSPワークショップ「強相関電子系における価数揺らぎと量臨界性」
    • Place of Presentation
      東大物性研究所
    • Year and Date
      2013-02-25
    • Related Report
      2012 Annual Research Report
  • [Presentation] Valence Instability and Quantun Criticality in α-YbAlB42013

    • Author(s)
      久我健太郎
    • Organizer
      ISSPワークショップ「強相関電子系における価数揺らぎと量臨界性」
    • Place of Presentation
      東大物性研究所
    • Year and Date
      2013-02-25
    • Related Report
      2012 Annual Research Report
  • [Presentation] Superconductivity and multipole in the cage compounds PrTr2Al20 (Tr = Ti, V)2013

    • Author(s)
      A. Sakai
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」第4回研究会
    • Place of Presentation
      東京工業大学大岡山キャンパス
    • Year and Date
      2013-01-14
    • Related Report
      2012 Annual Research Report
  • [Presentation] 四極子近藤系PrTi2Al20の超伝導と元素置換2013

    • Author(s)
      辻本真規
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」第4回研究会
    • Place of Presentation
      東京工業大学大岡山キャンパス
    • Year and Date
      2013-01-14
    • Related Report
      2012 Annual Research Report
  • [Presentation] Heavy fermion formation and quantum criticality in α-, β-YbAlB4: effects of valence fluctuation and anisotropy2013

    • Author(s)
      Y. Matsumoto
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」第4回研究会
    • Place of Presentation
      東京工業大学大岡山キャンパス
    • Year and Date
      2013-01-14
    • Related Report
      2012 Annual Research Report
  • [Presentation] Thermal expansion and impurity effectsin the valence fluctuating compound YbAlB42013

    • Author(s)
      K. Sone
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」第4回研究会
    • Place of Presentation
      東京工業大学大岡山キャンパス
    • Year and Date
      2013-01-14
    • Related Report
      2012 Annual Research Report
  • [Presentation] 電気輸送特性と比熱熱測定によるα-YbAlB4のメタ磁性の研究2013

    • Author(s)
      洪辰杓
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」第4回研究会
    • Place of Presentation
      東京工業大学大岡山キャンパス
    • Year and Date
      2013-01-14
    • Related Report
      2012 Annual Research Report
  • [Presentation] α-YbAl1-xFexB4における価数クロスオーバーと量子臨界現象2013

    • Author(s)
      久我健太郎
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」第4回研究会
    • Place of Presentation
      東京工業大学大岡山キャンパス
    • Year and Date
      2013-01-14
    • Related Report
      2012 Annual Research Report
  • [Presentation] 四極子近藤格子PrTr2Al20 (Tr =Ti, V)における四極子秩序と超伝導2012

    • Author(s)
      酒井明人
    • Organizer
      第6回 物性科学領域横断研究会
    • Place of Presentation
      東京大学 浅野キャンパス
    • Year and Date
      2012-11-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] 籠状物質 PrTr2Al20(Tr:遷移金属元素)の低温物性2012

    • Author(s)
      辻本真規
    • Organizer
      第6回 物性科学領域横断研究会
    • Place of Presentation
      東京大学 浅野キャンパス
    • Year and Date
      2012-11-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] パイロクロア型酸化物Eu2Ir2O7単結晶における金属絶縁体転移と磁気転移2012

    • Author(s)
      石川 洵
    • Organizer
      第6回 物性科学領域横断研究会
    • Place of Presentation
      東京大学 浅野キャンパス
    • Year and Date
      2012-11-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] 硫化スピネル磁性体の合成と磁気フラストレーション2012

    • Author(s)
      入谷健資
    • Organizer
      第6回 物性科学領域横断研究会
    • Place of Presentation
      東京大学 浅野キャンパス
    • Year and Date
      2012-11-28
    • Related Report
      2012 Annual Research Report
  • [Presentation] パイロクロア型イリジウム酸化物Eu2Ir2O7における金属絶縁体転移と磁性2012

    • Author(s)
      石川 洵
    • Organizer
      量子スピン系の物理
    • Place of Presentation
      京都大学
    • Year and Date
      2012-11-13
    • Related Report
      2012 Annual Research Report
  • [Presentation] 硫化スピネル磁性体の合成と磁気フラストレーション2012

    • Author(s)
      入谷健資
    • Organizer
      量子スピン系の物理
    • Place of Presentation
      京都大学
    • Year and Date
      2012-11-13
    • Related Report
      2012 Annual Research Report
  • [Presentation] Kondo Effects and Multipole Orders in the cage compounds RTr2Al20 (R = Pr and Sm, Tr = Ti, V, Cr)2012

    • Author(s)
      A. Sakai
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」ワークショップ~カゴ状構造に宿る強相関物性~
    • Place of Presentation
      首都大学東京 南大沢キャンパス
    • Year and Date
      2012-09-27
    • Related Report
      2012 Annual Research Report
  • [Presentation] Low Temperature Specific Heat Study of the Superconductivity in the Ferroquadrupolar State in PrTi2Al202012

    • Author(s)
      Yosuke Matsumoto
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」ワークショップ~カゴ状構造に宿る強相関物性~
    • Place of Presentation
      首都大学東京 南大沢キャンパス
    • Year and Date
      2012-09-27
    • Related Report
      2012 Annual Research Report
  • [Presentation] 籠状化合物PrTi2Al20の元素置換効果2012

    • Author(s)
      辻本真規
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」ワークショップ~カゴ状構造に宿る強相関物性~
    • Place of Presentation
      首都大学東京 南大沢キャンパス
    • Year and Date
      2012-09-27
    • Related Report
      2012 Annual Research Report
  • [Presentation] 価数揺動系YbAlB4の熱膨張と不純物置換効果2012

    • Author(s)
      曾根啓太
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-21
    • Related Report
      2012 Annual Research Report
  • [Presentation] カゴ状物質RTr2Al20の超音波を用いた弾性特性の研究2012

    • Author(s)
      田村大
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-20
    • Related Report
      2012 Annual Research Report
  • [Presentation] PrTi2Al20における極低温・高圧下物性測定2012

    • Author(s)
      鈴木淳一郎
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-20
    • Related Report
      2012 Annual Research Report
  • [Presentation] PrTixTr1-xAl20(Tr:遷移金属)の単結晶育成と低温物性2012

    • Author(s)
      辻本真規
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-20
    • Related Report
      2012 Annual Research Report
  • [Presentation] 重い電子化合物YbCo2Zn20のNi置換効果2012

    • Author(s)
      志村恭通
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-20
    • Related Report
      2012 Annual Research Report
  • [Presentation] 重い電子系α-YbAl1-xFexB4の強磁場磁化と価数2012

    • Author(s)
      寺島拓
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-20
    • Related Report
      2012 Annual Research Report
  • [Presentation] 価数揺動物質α-Yb(Al1-xFex)B4の圧力下物性測定およびその研究2012

    • Author(s)
      阪口友唯
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-20
    • Related Report
      2012 Annual Research Report
  • [Presentation] 四極子近藤格子系PrTr2Al20(Tr=Ti,V)における極低温物性2012

    • Author(s)
      酒井明人
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-19
    • Related Report
      2012 Annual Research Report
  • [Presentation] 四極子秩序を示すPrTr2Al20(Tr=V,Ti)の高圧下物性2012

    • Author(s)
      田中斗志貴
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-19
    • Related Report
      2012 Annual Research Report
  • [Presentation] Al-NMRによるPrTi2Al20の研究II2012

    • Author(s)
      徳永陽
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-19
    • Related Report
      2012 Annual Research Report
  • [Presentation] パイロクロア酸化物Eu2Ir2O7単結晶の金属絶縁体転移と低温物性2012

    • Author(s)
      石川洵
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-18
    • Related Report
      2012 Annual Research Report
  • [Presentation] Eu2Ir2O7の磁気秩序相における共鳴磁気散乱の観察2012

    • Author(s)
      植松大介
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-18
    • Related Report
      2012 Annual Research Report
  • [Presentation] パイロクロア磁性体Pr2Zr2O7における極低温磁場中誘電特性2012

    • Author(s)
      木村健太
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-18
    • Related Report
      2012 Annual Research Report
  • [Presentation] Anomalous hybridization effect in cubic quadrupole system PrTr2Al20 (Tr = Ti, V)2012

    • Author(s)
      A. Sakai
    • Organizer
      The 19th International Conference on Magnetism with Strongly Correlated Electron Systems (ICM)
    • Place of Presentation
      Busan, Korea
    • Year and Date
      2012-07-13
    • Related Report
      2012 Annual Research Report
  • [Presentation] Fe doping and magnetic field effect in the valence fluctuating heavy fermion system α-YbAlB42012

    • Author(s)
      K. Kuga
    • Organizer
      The 19th International Conference on Magnetism with Strongly Correlated Electron Systems (ICM)
    • Place of Presentation
      Busan, Korea
    • Year and Date
      2012-07-10
    • Related Report
      2012 Annual Research Report
  • [Presentation] Synchrotron X-ray spectroscopy study on the valence state in a- and b-YbAlB4 at low temperatures and high magnetic fields2012

    • Author(s)
      Y. H. Matsuda
    • Organizer
      The 19th International Conference (ICM) on Magnetism with Strongly Correlated Electron Systems
    • Place of Presentation
      Busan, Korea
    • Year and Date
      2012-07-08
    • Related Report
      2012 Annual Research Report
  • [Presentation] Synchrotron X-ray Absorption Study on the Valence Fluctuation in Ce-based Heavy Fermion Compounds at High Magnetic Fields2012

    • Author(s)
      Y. H. Matsuda
    • Organizer
      The 10th International Conference on Research in High Magnetic Fields
    • Place of Presentation
      Wuhan, China
    • Year and Date
      2012-07-03
    • Related Report
      2012 Annual Research Report
  • [Presentation] Valence state of YbRh2Si2 at high magnetic fields2012

    • Author(s)
      H. Nakai
    • Organizer
      The 10th International Conference on Research in High Magnetic Fields
    • Place of Presentation
      Wuhan, China
    • Year and Date
      2012-07-03
    • Related Report
      2012 Annual Research Report
  • [Presentation] Novel quantum criticality in the valence fluctuating heavy-fermion β-YbAlB42012

    • Author(s)
      Yosuke Matsumoto
    • Organizer
      International Seminar and Workshop on Quantum Matter from the Nano- to the Macroscale
    • Place of Presentation
      MPI, Dresden, Germany
    • Year and Date
      2012-06-25
    • Related Report
      2012 Annual Research Report
  • [Presentation] Continuous Metal-Insulator Transition in the Pyrochlore Iridate Eu2Ir2O72012

    • Author(s)
      Jun J. Ishikawa
    • Organizer
      Highly Frustrated Magnetism 2012 (HFM2012)
    • Place of Presentation
      McMaster University, Canada
    • Year and Date
      2012-06-05
    • Related Report
      2012 Annual Research Report
  • [Presentation] High Magnetic Field X-ray Spectroscopy of Heavy Fermion Systems2012

    • Author(s)
      Yasuhiro H. Matsuda
    • Organizer
      Spectroscopy of Rare-Earth Materials at Extreme Conditions: Structure, Magnetism and Energy
    • Place of Presentation
      Argonne, IL, USA
    • Year and Date
      2012-05-09
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] 重い電子系価数揺動物質α-YbAl_<1-x>Fe_xB_4の磁場中低温物性2012

    • Author(s)
      久我健太郎
    • 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
      2012-03-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] α-YbAlB_4の極低温比熱測定によるメタ磁性の研究2012

    • Author(s)
      洪辰杓
    • 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
      2012-03-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] Fe doping effect in the valence fluctuating heavy Fermion system α-YbAlB4 and the physical properties under fields2012

    • Author(s)
      K.Kuga
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」ワークショップ~超伝導、多極子の物理における最近の話題~
    • Place of Presentation
      東京大学物性研究所
    • Year and Date
      2012-01-10
    • Related Report
      2011 Annual Research Report
  • [Presentation] 価数揺動系α-YbAlB_4における異方的な重い電子の形成2011

    • Author(s)
      松本洋介
    • 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
      2011-09-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 価数揺動系YbAlB_4の磁気抵抗とその異方的重い電子形成の可能性2011

    • Author(s)
      洪辰杓
    • 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
      2011-09-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 重い電子系価数揺動物質YbAlB_4の熱膨張2011

    • Author(s)
      曾根啓太
    • 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
      2011-09-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 重い電子系価揺動物質α-YbAlB_4の鉄ドープ誘起量子臨界現象2011

    • Author(s)
      久我健太郎
    • 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
      2011-09-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] Quantum criticality without tuning and possible quantum critical phase in the mixed valent compound β-YbAlB_42011

    • Author(s)
      Y.Matsumoto
    • Organizer
      International Conference on Strongly Correlated Electron Systems (SCES 2011)
    • Place of Presentation
      Cambridge, England(招待講演)
    • Year and Date
      2011-09-02
    • Related Report
      2011 Annual Research Report
  • [Presentation] A magnetic field driven Fermi surface reconstruction in the heavy fermion α-YbAlB_42011

    • Author(s)
      E.C.T.O' Farrell
    • Organizer
      International Conference on Strongly Correlated Electron Systems (SCES 2011)
    • Place of Presentation
      Cambridge, England
    • Year and Date
      2011-08-31
    • Related Report
      2011 Annual Research Report
  • [Presentation] Quantum criticality without tuning in the intermediate valence material β-YbAlB_42011

    • Author(s)
      S.Nakatsuji
    • Organizer
      The 26th International Conference on`Low Temperature Physics (LT26)
    • Place of Presentation
      Beijing, China(招待講演)
    • Year and Date
      2011-08-12
    • Related Report
      2011 Annual Research Report
  • [Presentation] Quantum Phase Transition Induced by Chemical Substitution in the valence fluctuating System α-YbAlB_42011

    • Author(s)
      K.Kuga
    • Organizer
      The 26th International Conference on Low Temperature Physics (LT26)
    • Place of Presentation
      Beijing, China
    • Year and Date
      2011-08-12
    • Related Report
      2011 Annual Research Report
  • [Presentation] Novel Quantum Phases in 4f electron based Kondo Lattice Systems2011

    • Author(s)
      S.Nakatsuji
    • Organizer
      Ultra Low Temperature Physics (ULT-2011)
    • Place of Presentation
      Korea, Daejeon(招待講演)
    • Year and Date
      2011-08-01
    • Related Report
      2011 Annual Research Report
  • [Presentation] 価数揺動系α-,β-YbAlB_4における重い電子の形成と量子臨界現象2011

    • Author(s)
      松本洋介
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」第3回研究会
    • Place of Presentation
      東京大学物性研究所
    • Year and Date
      2011-06-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] Magnetism and Non-Fermi Liquid Behavior in the Valence fluctuating heavy Fermion system α-YbAl_<1-x>Fe_xB_42011

    • Author(s)
      K.Kuga
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」第3回研究会
    • Place of Presentation
      東京大学物性研究所
    • Year and Date
      2011-06-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] Spin liquids, Quantum Criticality, Anomalous Transport in 4fbased Kondo Lattice Systems2011

    • Author(s)
      S.Nakatsuji
    • Organizer
      Japan-Canada (CIFAR/MEXT Network) Joint Workshop on Frustration in Condensed Matter
    • Place of Presentation
      Vancouver Canada(招待講演)
    • Year and Date
      2011-05-28
    • Related Report
      2011 Annual Research Report
  • [Presentation] Spin Liquids and Quantum Criticality in Itinerant Magnets2011

    • Author(s)
      S.Nakatsuji
    • Organizer
      Conference on Novel Phenomena in Frustrated Systems
    • Place of Presentation
      Santa Fe, USA(招待講演)
    • Year and Date
      2011-05-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] Quantum Critical Phases in Kondo Lattice Systems2011

    • Author(s)
      S.Nakatsuji
    • Organizer
      Hangzhou Workshop on Quantum Matter-Unconventional Superconductivity and Electron Correlations
    • Place of Presentation
      Hangzhou, China(招待講演)
    • Year and Date
      2011-04-13
    • Related Report
      2011 Annual Research Report

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Published: 2011-04-06   Modified: 2018-03-28  

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