1. Room-temperature ferromagnetism in self-assembled (In, Mn)As quantum dots.
- Author
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Chen, Y. F., Huang, J. H., Lee, W. N., Chin, T. S., Huang, R. T., Chen, F. R., Kai, J. J., and Ku, H. C.
- Subjects
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QUANTUM dots , *QUANTUM electronics , *SEMICONDUCTORS , *TEMPERATURE , *EPITAXY , *MICROSTRUCTURE , *ZINC , *FERROMAGNETISM , *MAGNETISM - Abstract
Self-assembled In1-xMnxAs quantum dots (0.19≤=x≤=0.45) have been grown on GaAs (100) substrates by low-temperature molecular beam epitaxy. The microstructure analysis revealed that the uniformly distributed In1-xMnxAs dots have a zinc blende structure as x≤=0.38. Furthermore, all samples exhibit ferromagnetic state at 5 K, and their Curie temperatures range from 260 to 340 K varying with x. These (In, Mn)As quantum dots are promising for room-temperature spintronic devices [ABSTRACT FROM AUTHOR]
- Published
- 2007
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