Exchange interaction for transition-metal impurities in II-VI semiconductors

T. Mizokawa, A. Fujimori

研究成果: Article査読

40 被引用数 (Scopus)

抄録

We have investigated the exchange interaction between the localized (Formula presented) electrons of (Formula presented) transition-metal impurities and the delocalized host band electrons in II-VI semiconductors based on the configuration-interaction scheme. The exchange constant (Formula presented) in the Kondo-type effective Hamiltonian is evaluated from Ti to Ni. For Mn, Fe, and Co, (Formula presented) is negative (antiferromagnetic), and is in good agreement with experimental values. The exchange coupling of the Ti impurity is predicted to be positive (ferromagnetic) due to Hund’s coupling. For V, Cr, and Ni, in which orbital degrees of freedom is important, the sign of (Formula presented) depends on the Jahn-Teller distortion.

本文言語English
ページ(範囲)6669-6672
ページ数4
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
56
11
DOI
出版ステータスPublished - 1997
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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