Magnetic circular dichroism from the impurity band in III-V diluted magnetic semiconductors

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dc.creatorTang, Jian-Ming
dc.creatorFlatte, Michael E.
dc.date2008-06-10
dc.date.accessioned2026-07-07T10:08:54Z
dc.date.available2026-07-07T10:08:54Z
dc.descriptionThe magnetic circular dichroism of III-V diluted magnetic semiconductors, calculated within a theoretical framework suitable for highly disordered materials, is shown to be dominated by optical transitions between the bulk bands and an impurity band formed from magnetic dopant states. The theoretical framework incorporates real-space Green's functions to properly incorporate spatial correlations in the disordered conduction band and valence band electronic structure, and includes extended and localized electronic states on an equal basis. Our findings reconcile unusual trends in the experimental magnetic circular dichroism in III-V DMSs with the antiferromagnetic p-d exchange interaction between a magnetic dopant spin and its host.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0806.1753
dc.identifierhttp://arxiv.org/abs/0806.1753
dc.identifierPhys. Rev. Lett. 101, 157203 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.157203
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171158
dc.subjectMaterials Science
dc.subjectMesoscale and Nanoscale Physics
dc.titleMagnetic circular dichroism from the impurity band in III-V diluted magnetic semiconductors
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