We have studied the electronic structure of Zn1-χMnχO using photoemission spectroscopy measurements and configuration-interaction (CI) calculations on a MnO4 cluster model. It is shown that the CI calculation can give a consistent description of the photoemission and d-d optical absorption spectra of Zn1-χMnχO as well as those of other II-VI- and III-V-based diluted magnetic semiconductors such as Cd1-χMnχTe and Ga1-χMnχAs. The CI approach predicts that the magnitude of the p-d exchange constant in Zn1-χMnχO is much larger than that in Ga1-χMnχAs.
|Physical Review B - Condensed Matter and Materials Physics
|Published - 2002 2月 15
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