Journal article
Magnetic Circular Dichroism from the Impurity Band in III-V Diluted Magnetic Semiconductors
Physical review letters, Vol.101(15), pp.157203-157203
10/10/2008
DOI: 10.1103/PhysRevLett.101.157203
PMID: 18999634
Abstract
The 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 real-space Green's functions incorporate spatial correlations in the disordered conduction band and valence-band electronic structure, and include extended and localized states on an equal basis. Our findings reconcile unusual trends in the experimental magnetic circular dichroism in III-V diluted magnetic semiconductors with the antiferromagnetic p-d exchange interaction between a magnetic dopant spin and its host.
Details
- Title: Subtitle
- Magnetic Circular Dichroism from the Impurity Band in III-V Diluted Magnetic Semiconductors
- Creators
- Jian-Ming Tang - Univ New Hampshire, Dept Phys, Durham, NH 03824 USAMichael E. Flatte - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Physical review letters, Vol.101(15), pp.157203-157203
- DOI
- 10.1103/PhysRevLett.101.157203
- PMID
- 18999634
- NLM abbreviation
- Phys Rev Lett
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Publisher
- Amer Physical Soc
- Number of pages
- 4
- Grant note
- ONR MURI; MURI; Office of Naval Research ARO MURI; MURI
- Language
- English
- Date published
- 10/10/2008
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984428799702771
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