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

doi:10.1103/PhysRevB.72.045103

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

Research output: Contribution to journal › Article › peer-review

106 Citations (Scopus)

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 language	English
Article number	045103
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.72.045103
Publication status	Published - 2005 Jul 15

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.72.045103

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AU - Vogt, T.

AU - Lazarov, N. Dj

AU - Bud'ko, S. L.

AU - Canfield, P. C.

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N2 - 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.

AB - 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.

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Kondo insulator description of spin state transition in FeSb2

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