The semiconductor-to-ferromagnetic-metal transition in FeSb2

A. V. Lukoyanov, V. V. Mazurenko, V. I. Anisimov, M. Sigrist, T. M. Rice

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

We propose FeSb2 to be a nearly ferromagnetic small gap semiconductor, hence a direct analog of FeSi. We find that despite different compositions and crystal structures, in the local density approximation with on-site Coulomb repulsion correction (LDA+U) method magnetic and semiconducting solutions for U=2.6 eV are energetically degenerate similar to the case of FeSi. For both FeSb2 and FeSi (FeSi1-xGex alloys) the underlying transition mechanism allows one to switch from a small gap semiconductor to a ferromagnetic metal with magnetic moment ≈1 μB per Fe ion with external magnetic field.

Original languageEnglish
Pages (from-to)205-207
Number of pages3
JournalEuropean Physical Journal B
Volume53
Issue number2
DOIs
Publication statusPublished - Sep 2006
Externally publishedYes

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