Evolution of Hall Coefficient in Two-Dimensional Heavy Fermion CeCoIn_5(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

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• We report on the pressure dependence of the Hall coefficient R_H in quasi-2D heavy fermion CeCoIn_5. At ambient pressure, below a temperature associated with the emergence of non-Fermi liquid properties, R_H is anomalously enhanced. We found that the restoration of the Fermi liquid state with applied pressure leads to a gradual suppression of this dramatic enhancement. Moreover, the enhancement in R_H was found to be confined to an intermediate temperature window, where inelastic electron-electron scattering is dominant. Our results strongly support the presence of cold and hot spots on the Fermi surface probably due to anisotropic scattering by antiferromagnetic fluctuations, which may also prove relevant for the debate on the anomalous normal-state properties of high-T_c cuprates.

• 社団法人日本物理学会の論文
• 2006-02-15

著者

• Settai R.

  Nara Medical University Center For Infectious Diseases

• Mito T

  National Institute Of Material Science

• Behnia K.

  Laboratoire De Physique Quantique (cnrs)

• Izawa Koichi

  Department Of Physics Faculty Of Science Hiroshima University

• Settai R.

  Graduate School of Science, Osaka Univ.

• Onuki Y.

  Graduate School of Science, Osaka University

• HEDO M.

  Institute for Solid State Physics, University of Tokyo

• UWATOKO Y.

  Institute for Solid State Physics, University of Tokyo

• Hedo M.

  Institute For Solid State Physics University Of Tokyo

• Settai R

  Research Institute For Scientific Measurements Tohoku University

• Izawa K

  Institute For Solid State Physics University Of Tokyo:cea-grenoble

• IZAWA K.

  Institute for Solid State Physics, University of Tokyo

• MATSUMOTO T.

  National Institute of Material Science

• KONTANI H.

  Department of Physics, Nagoya University

• NAKAJIMA Y.

  Institute for Solid State Physics, University of Tokyo

• MATSUDA Y.

  Institute for Solid State Physics, University of Tokyo

• BEHNIA K.

  Institute for Solid State Physics, University of Tokyo

• SHISHIDO H.

  Graduate School of Science, Osaka University

• Kontani H

  Department Of Physics Nagoya University

• Mito Takeshi

  Department Of Physical Science Graduate School Of Engineering Science Osaka University

• Suematsu Hisayuki

  Extreme Energy-density Res. Inst. Nagaoka Univ. Of Technol.

• Uwatoko Y.

  Institute For Solid State Physics University Of Tokyo

• Shishido H

  Extreme Energy-density Research Institute Nagaoka University Of Technology

• Onuki Y

  Graduate School Of Science Osaka Univ.

• Kontani H.

  Department Of Pharmacology Faculty Of Pharmaceutical Science Hokuriku University

• Onuki Y.

  Graduate School Of Science Osaka Univ.

• SETTAI R.

  Graduate School of Science, Osaka University

• BEHNIA K.

  Institute for Solid State Physics, University of Tokyo:Laboratoire de Phyque Quantique (CNRS), ESPCI

• Izawa K.

  Institute for Solid State Physics, University of Tokyo:CEA-Grenoble

• Uwatoko Y.

  Institute for Solid State Physice, University of Tokyo

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