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

T. Mizokawa, A. Fujimori

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)6669-6672
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume56
Issue number11
DOIs
Publication statusPublished - 1997 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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