Kondo insulator description of spin state transition in FeSb2

C. Petrovic, Y. Lee, T. Vogt, N. Dj Lazarov, S. L. Bud'ko, P. C. Canfield

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Abstract

The thermal expansion and heat capacity of FeSb2 at ambient pressure agrees with a picture of a temperature induced spin state transition within the Fe t2g multiplet. However, high pressure powder diffraction data show no sign of a structural phase transition up to 7 GPa. A bulk modulus B=84(3) GPa has been extracted and the temperature dependence of the Grüneisen parameter has been determined. We discuss here the relevance of a Kondo insulator description for this material.

Original languageEnglish
Article number045103
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number4
DOIs
Publication statusPublished - 2005 Jul 15

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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