Study of valence fluctuation, quantum critical phenomena, and superconductivity in heavy fermion systems

2012 Fiscal Year Final Research Report

• Project/Area Number: 22540343
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: The Institute of Physical and Chemical Research
• Principal Investigator: YAMAOKA Hitoshi 独立行政法人理化学研究所, 石川X線干渉光学研究室, 専任研究員 (30239850)
• Co-Investigator(Kenkyū-buntansha): JARRIGE Ignace 独立行政法人日本原子力開発機構, 放射光科学研究ユニット, 研究員 (00455289)
• Project Period (FY): 2010 – 2012
• Keywords: 強相関系 / 物性実験 / 放射線・X線・粒子線 / 量子ビーム / 量子臨界 / 超伝導 / 高圧 / 共鳴X線発光分光

Research Abstract

In rare-earth compounds f electrons have local nature, but interesting physical properties are realized via hybridization between f and conduction electrons, which has been understood due to the interplay between the RKKY interaction and the Kondo effect. Here we have studied the electronic structure around quantum critical point by using resonant x-ray emission spectroscopy (RXES). We also used photoelectron spectroscopy complementarily at ambient pressure. In the RXES studies we control the Kondo temperature by applying pressure. We newly found anomales in Yb valence of skutterudite Yb_xFe_4Sb_<12> in the temperature dependence.

Research Products

• [Journal Article] Valence transitions in the heavy fermion compound YbCuAl as a function of temperature and pressure (2013)
  • Author(s): H. Yamaoka, N. Tsujii, Y. Utsumi, H. Sato, I. Jarrige, Y.Yamamoto, J.-F. Lin, N. Hiraoka, H. Ishii, K.-D. Tsuei, and J. Mizuki
  • Journal Title: Phys. Rev. Volume: B87 Pages: 205120
  • Peer Reviewed
• [Journal Article] Electronic transition in high-pressure low temperature CePd_2Si_2 studied by resonant x-ray emission spectroscopy (2012)
  • Author(s): H. Yamaoka, Y. Zekko, A. Kotani, I. Jarriger, N. Tsujii, J.-F. Lin, J. Mizuki, N. Hiraoka, H. Ishii, K.-D. Tsuei, and J. Mizuki
  • Journal Title: Phys. Rev. Volume: B86 Pages: 235131
  • Peer Reviewed
• [Journal Article] Ruby pressure scale in a low-temperature diamond anvil cell (2012)
  • Author(s): H. Yamaoka, Y. Zekko, I. Jarrige, J.-F. Lin, N. Hiraoka, H. Ishii, K.-D. Tsuei, and J. Mizuki,
  • Journal Title: J. Appl. Phys Volume: 112 Pages: 1124503
  • Peer Reviewed
• [Journal Article] The electronic structure and the valence state of Yb_2Pd_2Sn and YbPd_2Sn studied by photoelectron and resonant x-ray emission spectroscopies (2012)
  • Author(s): H. Yamaoka, P. Thunstrom, I. Jarrige,K. Shimada, N. Tsujii, M. Arita, H. Iwasawa, H. Hayashi, J. Jiang, H. Namatame, M. Taniguchi, N. Hiraoka, H. Ishiiand K.-D. Tsuei
  • Journal Title: Phys.Rev. Volume: B86 Pages: 08513
  • Peer Reviewed
• [Journal Article] High-resolution photoelectron spectroscopy study of Kondo metals: SmSn_3 and Sm_<0.9>La_<0.1>Sn_3 (2012)
  • Author(s): H. Yamaoka, P. Thunstrom, N. Tsujii, I. Jarrige,K. Shimada, M. Arita, H. Iwasawa, H. Hayashi, J. Jiang, T. Habuchi, D. Hirayama, H. Namatame, M. Taniguchi, U. Murao, S. Hosoya, A. Tamaki, and H. Kitazawa
  • Journal Title: Phys.Rev. Volume: B 85 Pages: 115120
  • Peer Reviewed
• [Journal Article] X線共鳴発光分光法による高圧下での4f電子系化合物の物性研究 (2011)
  • Author(s): 山岡人志、Ignace Jarrige
  • Journal Title: 日本放射光学会誌放射光 Volume: 第24巻2号(解説) Pages: 53-63
  • Peer Reviewed
• [Journal Article] Electronic structure of YbGa_<1.15>Si_<0.85> and YbGa_xGe_<2-x> probed by resonant x-ray emission and hotoelectron spectroscopies (2011)
  • Author(s): H. Yamaoka, I. Jarrige, N. Tsujii, M. Imai, J.-F. Lin, M. Matsunami, R. Eguchi, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, M. Taguchi, Y. Senba, H. Ohashi, N. Hiraoka, H. Ishii, and K.-D. Tsuei
  • Journal Title: Phys. Rev. Volume: B 83 Pages: 104525
  • Peer Reviewed
• [Journal Article] Strong coupling between 4f valence instability and 3d ferromagnetism in YbxFe_4Sb_<12> studied by resonant X-ray emission spectroscopy (2011)
  • Author(s): H. Yamaoka,I. Jarrige,N.Tsujii,J.-F.Lin,T.Ikeno,Y.Isikawa,K.Nishimura,R.Higashinaka,H.Sato,N.Hiraoka,H.Ishii,and K.-D.Tsuei
  • Journal Title: Phys. Rev. Lett. Volume: 107 Pages: 177203
  • Peer Reviewed
• [Journal Article] Pressure and temperature dependences of the electronic structure of CeIrSi_3 probed by resonant x-ray emission spectroscopy (2011)
  • Author(s): H. Yamaoka, I. Jarrige, N. Tsujii, A. Kotani, J.-F. Lin, F. Honda, R. Settai, Y. Onuki, N. Hiraoka, H. Ishiiand K.-D. Tsuei
  • Journal Title: J. Phys. Soc. Jpn. Volume: 80 Pages: 124701
  • Peer Reviewed
• [Journal Article] Hybridization and suppression of superconductivity in CeFeAsO_<1-y>: Pressure and temperature dependence of the electronic structure (2010)
  • Author(s): H. Yamaoka, I. Jarrige, A.Ikeda-Ohno, S. Tsutsui, J.-F. Lin, N. Takeshita, K. Miyazawa, A. Iyo, H. Kito, H. Eisaki, N. Hiraoka, H. Ishii, and K.-D. Tsuei
  • Journal Title: Phys. Rev. Volume: B 82 Pages: 125123
  • Peer Reviewed
• [Presentation] Ce(Ru_<1-x>Fex)2Al_<10>のX線非弾性散乱測定:Ce価数の組成・圧力依存性 (2013)
  • Author(s): 舌古裕美子, 山岡人志, 山本義哉, Fabio Strigari, 西岡孝, Jung-Fu Lin, 平岡望, 石井啓文, Ku-Ding Tsuei, 水木純一郎
  • 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: 20130326-29
• [Presentation] CePd_2Si_2及びCeRh_2Si_2の共鳴X線発光分光測定 (2013)
  • Author(s): 山岡人志, 舌古裕美子, 小谷章雄, Ignace Jarrige, 辻井直人, Jung-Fu Lin, 水木純一郎, 阿部英樹、北澤英明、平岡望, 石井啓文, Ku-DingTsuei
  • 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] 高圧低温下共鳴X線非弾性散乱実験～高圧低温下でのルビー圧力スケール (2013)
  • Author(s): 舌古裕美子, 山岡人志, Ignace Jarrige, Jung-FuLin, 平岡望, 石井啓文, Ku-DingTsuei, 水木純一郎
  • 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] Yb_2Pd_2Sn及びYbPd_2Snの高分解能光電子・発光分光測定 (2012)
  • Author(s): 山岡人志, Patrik Thunstrom, 辻井直人, Ignace Jarrige, 島田賢也,有田将司, 岩澤英明, 林博和, 姜健, 生天目博文, 谷口雅樹,平岡望, 石井啓文, Ku-Ding Tsuei,M. Giovannini, E. Bauer
  • Organizer: 日本物理学会2012年秋期大会
  • Place of Presentation: 横浜国立大学
  • Year and Date: 20120918-21
• [Presentation] SmSn_3及びSm_<0.9>La_<0.1>Sn_3の高分解能光電子分光測定 (2012)
  • Author(s): 山岡人志, Patrik Thunstrom, Ignace Jarrige, 島田賢也, 辻井直人, 有田将司,岩澤英明, 林博和, 姜健, 羽渕隆文, 平山大裕, 生天目博文, 谷口雅樹、村尾麗, 細矢信吾, 田巻明,北澤英明
  • 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が原キャンパス
  • Year and Date: 20120324-27
• [Presentation] Yb_xFe_4Sb_<12>スクッテルダイトにおける異常価数転移 (2011)
  • Author(s): 山岡人志, I. Jarrige, 辻井直人, Jung-Fu Lin, 池生剛、石川義和、西村克彦、東中良司、佐藤英行、平岡望、石井啓文、Ku-Ding Tsuei
  • Organizer: 日本物理学会2011年秋期大会
  • Place of Presentation: 富山大学
  • Year and Date: 20110921-24
• [Presentation] YbGa_<1.15>Si_<0.85>及びYbGa_xGe_<2-x>の共鳴X線発光分光・光電子分光測定 (2011)
  • Author(s): 山岡人志, Ignace Jarrige,辻井直人, 今井基晴, Jung-Fu Lin, 松波雅治5江口律子, 有田将司, 島田賢也, 生天目博文, 谷口雅樹, 田口宗孝, 仙波泰徳, 大橋治彦,平岡望、石井啓文、Ku-Ding Tsuei
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大学
  • Year and Date: 20110325-28
• [Presentation] Valence transitions in Ce and Yb systems under high pressure probed by resonant x-ray emission spectroscopy (2010)
  • Author(s): H. Yamaoka, I. Jarrige, N. Tsujii, S. Tsutsui, J.-F. Lin, N. Takeshita, K. Miyazawa, A. Iyo, H. Kito, H. Eisaki, F. Honda, R. Settai, Y. Onuki, N. Hiraoka, H. Ishii, and K.-D. Tsuei
  • Organizer: 7th International Conference on Inelastic X-ray Scattering (IXS2010)
  • Place of Presentation: World Trade Center, Grenoble, France
  • Year and Date: 20101011-14
• [Presentation] Pressure and temperature dependences of the electronic structure in CeIrSi3investigated by resonant x-ray emission spectroscopy (2010)
  • Author(s): H. Yamaoka, I. Jarrige, S. Tsutsui, J.-F. Lin, F. Honda, R. Settai, Y. Onuki, N. Tsujii, N. Hiraoka, H. Ishii, and K.-D. Tsuei
  • Organizer: International Conference on Heavy Electrons 2010
  • Place of Presentation: 首都大学東京南大沢キャンパス
  • Year and Date: 20100917-20
• [Remarks] SPring-8 Press Release "New Model for Charge Transfer of Magnetic Organic Molecule, TDAE-C60"
  • URL: http://www.spring8.or.jp/en/news_publications/press_release/2011/111025
• [Remarks] SPring-8 Press Release "Clarifying the Mechanism behind the Induction of Ferromagnetism in the Partial Absence of a Rare-Earth Element"
  • URL: http://www.spring8.or.jp/en/news_publications/press_release/2011/111102
• [Remarks] RIKEN Research highlight "The origin of organic magnets"
  • URL: http://www.rikenresearch.riken.jp/eng/research/6866