High Curie Temperature and Nano-Scale Spinodal Decomposition Phase in Dilute Magnetic Semiconductors
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概要
- 論文の詳細を見る
We show that spinoadal decomposition phase in dilute magnetic semiconductors (DMS) offers the possibility to have high Curie temperatures ($T_{\text{C}}$) even if the magnetic exchange interaction is short ranged. The spinodal decomposition is simulated by applying the Monte Carlo method to the Ising model with realistic (ab initio) chemical pair interactions between magnetic impurities in DMS. Curie temperatures are estimated by the random phase approximation with taking disorder into account. It is found that the spinodal decomposition phase inherently occurs in DMS due to strong attractive interactions between impurities. This phase decomposition supports magnetic network over the dimension of the crystal resulting in a high-$T_{\text{C}}$ phase.
- Japan Society of Applied Physicsの論文
- 2005-07-10
著者
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SATO Kazunori
The Institute of Scientific and Industrial Research (ISIR), Osaka University
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Katayama-yoshida Hiroshi
The Institute Of Scientific And Industrial Research (isir) Osaka University
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Dederichs Peter
Institut für Ferskoerperforschung, Forschungszentrum Juelich, D-52425 Juelich, Germany
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