Exchange mechanisms in diluted magnetic semiconductors

B. E. Larson, K. C. Hass, H. Ehrenreich, A. E. Carlsson

Research output: Contribution to journalArticlepeer-review

155 Scopus citations

Abstract

The hierarchy of Mn-Mn exchange mechanisms in Cd1-xMnxTe and related alloys is calculated perturbatively using a generalized Anderson Hamiltonian. Realistic parameters are obtained from experimental band structure information and local spin density ASW calculations. Super-exchange is found to dominate at nearest and next-neighbor distances, in agreement with the observed antiferromagnetic coupling. Calculated Cd1-xMnxTe exchange constants and predicted chemical trends are in good agreement with experiment and with ASW total energy calculations.

Original languageEnglish
Pages (from-to)347-350
Number of pages4
JournalSolid State Communications
Volume56
Issue number4
DOIs
StatePublished - Oct 1985

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