Heterogeneous Mixed-Valence States in RPd_3S_4 (R=Eu and Yb) Viewed from Thermopower, Electrical Resistivity and Specific Heat

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概要

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• Rare-earth palladium bronzes EuPd_3S_4 and YbPd_3S_4 with a crystal structure akin to that of the filled-skutterudite compounds are known to show the heterogeneous mixed-valence state scarcely observed among rare-earth intermetallics. In order to shed light on the state, we have measured the thermopower, electrical resistivity and specific heat. It is found that no enhancement of the density of states near the Fermi level occurs in either compound, unlike the case of homogeneous mixed-valence compounds. The thermopower of both systems is qualitatively interpreted using the two-carrier model of electrons and holes, consistently with the reported data of the Hall effect of EuPd_3S_4.

• 社団法人日本物理学会の論文
• 2002-07-15

著者

• Kitagawa J

  Hiroshima Univ. Higashi‐hiroshima

• Kitagawa Jiro

  Department Of Quantum Matter Adsm Hiroshima University

• 高畠 敏郎

  Department Of Quantum Matter Adsm Hiroshima University:institute For Advanced Materials Research Hir

• TAKABATAKE Toshiro

  Department of Quantum Matter,Graduate School of Advanced Science of Matter,Hiroshima University

• Takabatake T

  Hiroshima Univ. Hiroshima

• MATSUOKA Eiichi

  Institute for Solid State Physics, University of Tokyo

• TAKAHASHI Fumihisa

  Institute for Solid State Physics, University of Tokyo

• ABE Kazuo

  Institute for Solid State Physics, University of Tokyo

• ISHIKAWA Masayasu

  Institute for Solid State Physics, University of Tokyo

• Takabatake Toshiro

  Department Of Quantum Matter Adsm Hiroshima University

• Matsuoka Eiichi

  Institute For Solid State Physics University Of Tokyo

• Takahashi Fumihisa

  Institute For Solid State Physics University Of Tokyo

• Ishikawa M

  Univ. Tsukuba Ibaraki

• Ishikawa Y

  Toshiba Research And Development Center Kawasaki

• Ishikawa M

  Univ. Tokyo Osaka

• Ishikawa M

  Institute For Solid State Physics University Of Tokyo

• Ishikawa Masayasu

  Institute For Solid State Physics The University Of Tokyo

• Iino Masaaki

  The Institute For Solid State Physics The University Of Tokyo

• Abe Kazuo

  Institute For Solid State Physics University Of Tokyo

• Kitagawa Jiro

  Department of Electrical Engineering, Faculty of Engineering, Fukuoka Institute of Technology, Fukuoka 811-0295, Japan

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