Calculations of spin-induced transport in ferromagnets

M. S. Bahramy, P. Murugan, G. P. Das, Y. Kawazoe

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Based on first-principles density functional calculations, a general approach for determining and analyzing the degree of spin polarization (P) in ferromagnets is presented. The approach employs the so-called tetrahedron method to evaluate the Fermi surface integrations of P in both ballistic and diffusive regimes. The validity of the method is examined by comparing the calculated P values for Fe and Ni with the experiment. The method is shown to yield highly accurate results with minimal computational effort. Within our approach, it is also possible to systematically analyze the contributions of various types of electronic states to the spin-induced transport. As a case study, the transport properties of the soft-ferromagnet CeMn Ni4 are investigated in order to explain the origin of the existing difference between the experimental and theoretical values of P in this intermetallic compound.

本文言語English
論文番号054404
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
75
5
DOI
出版ステータスPublished - 2007 2月 8
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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