Enhanced electron correlations in FeSb$_2$

Details Enhanced electron correlations in FeSb$_2$ Enhanced electron correlations in FeSb$_2$

2011-02-14

arxiv.org/abs/1102.2722v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 7 figures; submitted to Annalen der Physik

Scientific paper

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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