Title

Suppression of carrier spin polarization in diluted ferromagnetic semiconductors

College

College of Science

Department/Unit

Physics

Document Type

Conference Proceeding

Source Title

Journal of Physics Condensed Matter

Volume

16

Issue

48

Publication Date

12-8-2004

Abstract

We present a theoretical method for studying diluted magnetic semiconductors, extending the dynamical cluster approximation. The precursor effects of the localization and the direct exchange interaction between magnetic impurities can be considered in the method. We apply the method to the two-dimensional square lattice system with random localized spins. We show that the strong antiferromagnetic superexchange interaction between nearest-neighbor sites suppresses the polarization of the carrier spin.

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Digitial Object Identifier (DOI)

10.1088/0953-8984/16/48/049

Disciplines

Physics

Keywords

Antiferromagnetism; Ferromagnetism; Brillouin scattering; Green's functions; Polarization (Electricity)

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