Model for FeSi, a strongly correlated insulator

Details Model for FeSi, a strongly correlated insulator Model for FeSi, a strongly correlated insulator

1994-10-07

arxiv.org/abs/cond-mat/9410021v2

Physics

Condensed Matter

21 pages, cond-mat/9410021 revised 10/17

Scientific paper

10.1103/PhysRevB.51.17439

Revised to reflect the differences between the second order perturbation theory method developed by Scheitzer and Czycholl, and followed by us, and the iterated perturbation theory (IPT)of Georges and Kotliar, et al. Because of our domain of interest, this does not materially change our conclusions, but it is important to realize that the method used here fails in the limit of large $U$, where IPT has had good results.

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