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

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

2009-02-18

arxiv.org/abs/0902.3109v1

Physics

Condensed Matter

Materials Science

6pages, 4 fig. accepted in PRB

Scientific paper

10.1103/PhysRevB.79.125123

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.

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