Majority-spin non-quasiparticle states in half-metallic ferrimagnet Mn$_2$VAl

A.I. Lichtenstein; E. Arrigoni; L. Chioncel; M.I. Katsnelson

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Majority-spin non-quasiparticle states in half-metallic ferrimagnet Mn₂VAl

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arxiv 0902.3109 v1 pith:RVEYEM5F submitted 2009-02-18 cond-mat.mtrl-sci cond-mat.str-el

Majority-spin non-quasiparticle states in half-metallic ferrimagnet Mn$_2$VAl

L. Chioncel , E. Arrigoni , M.I. Katsnelson , A.I. Lichtenstein This is my paper

classification cond-mat.mtrl-sci cond-mat.str-el

keywords non-quasiparticlestateshalf-metallicmajority-spinalloyappropriatebelowcalculated

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abstract

The density of non-quasiparticle states in the ferrimagnetic full-Heuslers Mn$_2$VAl alloy is calculated from first principles upon appropriate inclusion of correlations. In contrast to most half-metallic compounds, this material displays an energy gap in the majority-spin spectrum. For this situation, non-quasiparticle states are located below the Fermi level, and should be detectable by spin-polarized photoemission. This opens a new way to study many-body effects in spintronic-related materials.

Majority-spin non-quasiparticle states in half-metallic ferrimagnet Mn$_2$VAl

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