Ferromagnetic clusters induced by a nonmagnetic random disorder in diluted magnetic semiconductors
In this work, we analyze the nonmagnetic random disorder leading to a formation of ferromagnetic clusters in diluted magnetic semiconductors. The nonmagnetic random disorder arises from randomness in the host lattice. Including the disorder to the Kondo lattice model with random distribution of magn...
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| Veröffentlicht in: | Annals of physics 2016-12, Vol.375, p.313-321 |
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| container_end_page | 321 |
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| container_title | Annals of physics |
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| creator | Bui, Dinh-Hoi Phan, Van-Nham |
| description | In this work, we analyze the nonmagnetic random disorder leading to a formation of ferromagnetic clusters in diluted magnetic semiconductors. The nonmagnetic random disorder arises from randomness in the host lattice. Including the disorder to the Kondo lattice model with random distribution of magnetic dopants, the ferromagnetic–paramagnetic transition in the system is investigated in the framework of dynamical mean-field theory. At a certain low temperature one finds a fraction of ferromagnetic sites transiting to the paramagnetic state. Enlarging the nonmagnetic random disorder strength, the paramagnetic regimes expand resulting in the formation of the ferromagnetic clusters. |
| doi_str_mv | 10.1016/j.aop.2016.10.004 |
| format | Article |
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| ispartof | Annals of physics, 2016-12, Vol.375, p.313-321 |
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| source | Elsevier ScienceDirect Journals |
| subjects | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Diluted magnetic semiconductors Dynamical mean field theory Ferroelectrics Ferromagnetic–paramagnetic transition FERROMAGNETISM Magnetic fields MAGNETIC SEMICONDUCTORS MEAN-FIELD THEORY PARAMAGNETISM RANDOMNESS Semiconductors |
| title | Ferromagnetic clusters induced by a nonmagnetic random disorder in diluted magnetic semiconductors |
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