Are Mn3Si and CuMnSb antiferromagnetic half-metals?

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Abstract

The Heusler alloy Mn3Si and the semi-Heusler alloy CuMnSb order antiferromagnetically at low temperatures. The lack of magnetic field dependence of the antiferromagnetic order in these compounds, inferred from the resistivity, magnetization and specific heat up to are, however, incompatible with itinerant magnetism in the standard model of the metallic state. Here I discuss the possibility that this unusual stability may be related to a strongly reduced density of states of the minority charge carriers usually considered in the context of half-metallic ferromagnetism only.

Original languageEnglish
Pages (from-to)1085-1086
Number of pages2
JournalPhysica B: Condensed Matter
Volume329-333
Issue numberII
DOIs
StatePublished - May 2003
Externally publishedYes

Keywords

  • Half-metallic magnetism
  • Itinerant antiferromagnetism
  • Spin density wave

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