Journal article
Multiband tight-binding model of local magnetism in Ga1-xMnxAs
Physical review letters, Vol.92(4), pp.047201-047201
01/30/2004
DOI: 10.1103/PhysRevLett.92.047201
PMID: 14995399
Abstract
We present the spin and orbitally resolved local density of states (LDOS) for a single Mn impurity and for two nearby Mn impurities in GaAs. The GaAs host is described by a sp(3) tight-binding Hamiltonian, and the Mn impurity is described by a local p-d hybridization and on-site potential. Local spin-polarized resonances within the valence bands significantly enhance the LDOS near the band edge. For two nearby parallel Mn moments the acceptor states hybridize and split in energy. Thus scanning tunneling spectroscopy can directly measure the Mn-Mn interaction as a function of distance.
Details
- Title: Subtitle
- Multiband tight-binding model of local magnetism in Ga1-xMnxAs
- Creators
- Jian-Ming Tang - Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242-1479, USAMichael E Flatté - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Physical review letters, Vol.92(4), pp.047201-047201
- DOI
- 10.1103/PhysRevLett.92.047201
- PMID
- 14995399
- NLM abbreviation
- Phys Rev Lett
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Language
- English
- Date published
- 01/30/2004
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984428831702771
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