Spin injection through an Fe/InAs interface

M. Zwierzycki, K. Xia, P. J. Kelly, G. E.W. Bauer, I. Turek

研究成果: Article査読

58 被引用数 (Scopus)

抄録

The spin dependence of the interface resistance between ferromagnetic Fe and InAs is calculated from first principles for specular and disordered (001) interfaces. Because of the symmetry mismatch in the minority-spin channel, the specular interface acts as an efficient spin filter with a transmitted current polarization between 98% and 89%. The resistance of a specular interface in the diffusive regime is comparable to the resistance of a few microns of bulk InAs. Symmetry breaking arising from interface disorder reduces the spin asymmetry substantially, and we conclude that efficient spin injection from Fe into InAs can only be realized using high-quality epitaxial interfaces.

本文言語English
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
67
9
DOI
出版ステータスPublished - 2003 3 3
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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