Effects of disorder on ferromagnetism in diluted magnetic semiconductors
We present results of a numerical mean-field treatment of interacting spins and carriers in doped diluted magnetic semiconductors, which takes into account the positional disorder present in these alloy systems. Within our mean-field approximation, disorder enhances the ferromagnetic transition temp...
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| Published in | Physical review letters Vol. 87; no. 10; p. 107203 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
03.09.2001
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| Online Access | Get more information |
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| Summary: | We present results of a numerical mean-field treatment of interacting spins and carriers in doped diluted magnetic semiconductors, which takes into account the positional disorder present in these alloy systems. Within our mean-field approximation, disorder enhances the ferromagnetic transition temperature for metallic densities not too far from the metal-insulator transition. Concurrently, the ferromagnetic phase is found to have very unusual temperature dependence of the magnetization as well as specific heat as a result of disorder. Unusual spin and charge transport is implied. |
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| ISSN: | 0031-9007 |
| DOI: | 10.1103/physrevlett.87.107203 |