Journal article
Onset of ferromagnetism in low-doped Ga1-xMnxAs
Physical review letters, Vol.99(22), pp.227205-227205
11/30/2007
DOI: 10.1103/PhysRevLett.99.227205
PMID: 18233322
Abstract
We develop a quantitatively predictive theory for impurity-band ferromagnetism in the low-doping regime of Ga1-xMnxAs. We compare it with measurements of a series of samples whose compositions span the transition from paramagnetic insulating to ferromagnetic conducting behavior. The theoretical Curie temperatures depend sensitively on the local fluctuations in the Mn-hole binding energy, which originate from Mn disorder and As antisite defects. The experimentally determined hopping energy is an excellent predictor of the Curie temperature, in agreement with the theory.
Details
- Title: Subtitle
- Onset of ferromagnetism in low-doped Ga1-xMnxAs
- Creators
- B. L. Sheu - Pennsylvania State UniversityR. C. MyersJ. -M. Tang - University of IowaN. Samarth - Pennsylvania State UniversityD. D. Awschalom - Quantum Group (United States)P. Schiffer - Pennsylvania State UniversityM. E. Flatte - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Physical review letters, Vol.99(22), pp.227205-227205
- DOI
- 10.1103/PhysRevLett.99.227205
- PMID
- 18233322
- NLM abbreviation
- Phys Rev Lett
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Publisher
- Amer Physical Soc
- Number of pages
- 4
- Language
- English
- Date published
- 11/30/2007
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984428837002771
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