Control of the magnetic anisotropy of epitaxially grown MnAs/GaAs ferromagnet-semiconductor hybrid superlattices
- Department of Physics and Astronomy and Material Research Center, Northwestern University, Evanston, Illinois 60208 (United States)
Epitaxial hybrid structures of the ferromagnet-semiconductor superlattice MnAs/GaAs were grown on GaAs(001) substrates by molecular-beam epitaxy and the dependence of the magnetic properties on the growth temperature and the periodicity were characterized. The magnetic anisotropy is strongly dependent on the surface reconstruction of GaAs(001) substrates. The increase of the periodicity from 5 nm/5 nm to 10 nm/10 nm also changes the magnetic anisotropy. These results demonstrate that the surface reconstruction of the substrate and the periodicity determine the magnetic structure of the MnAs/GaAs superlattices.
- OSTI ID:
- 20634387
- Journal Information:
- Applied Physics Letters, Vol. 85, Issue 18; Other Information: DOI: 10.1063/1.1813630; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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