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arXiv · 1102.2722

Enhanced electron correlations in FeSb$_2$

Peijie Sun·Martin Søndergaard·Bo B. Iversen·Frank Steglich
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Abstract

FeSb$_2$ has been recently identified as a new model system for studying many-body renormalizations in a $d$-electron based narrow gap semiconducting system, strongly resembling FeSi. The electron-electron correlations in FeSb$_2$ manifest themselves in a wide variety of physical properties including electrical and thermal transport, optical conductivity, magnetic susceptibility, specific heat and so on. We review some of the properties that form a set of experimental evidences revealing the crucial role of correlation effects in FeSb$_2$. The metallic state derived from slight Te doping in FeSb$_2$, which has large quasiparticle mass, will also be introduced.

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Peijie Sun, Martin Søndergaard, Bo B. Iversen, Frank Steglich. 2011-02-14. Enhanced electron correlations in FeSb$_2$. https://doi.org/10.1002/andp.201100033

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