First-principles study of electrical resistivity in Co2 MnSi compounds

Y. Kota, A. Sakuma

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Theoretical study of the electrical resistivity is performed for Heusler compounds Co2 MnSi with atomic disorder by using the first-principles techniques based on the tight-binding linear muffin-tin orbital method and Kubo-Greenwood formula. Experimentally, it is so difficult to control the degree of the ordering of the Heusler compounds precisely that their conduction property have not been clarified enough. In this study, we found that the electrical resistivities of the disordered Co2 MnSi reach about 100 μ Ω cm, which is much larger than binary alloys of 3-D transition metals. By analyzing the electronic structure, we consider that the large resistivities of the disordered Co2 MnSi are originated from the strong electrons scattering due to the low matching of electronic structure, when there is antisite type defections that break the L 21 crystalline symmetry.

Original languageEnglish
Article number6027787
Pages (from-to)4405-4408
Number of pages4
JournalIEEE Transactions on Magnetics
Volume47
Issue number10
DOIs
Publication statusPublished - 2011 Oct

Keywords

  • Ferromagnetic materials
  • transition metal compounds

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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