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Optical properties of diluted magnetic semiconductors in coherent potential approximation

机译:相干势近似的稀磁半导体的光学性质

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We study optical properties of a single band model for (III,Mn)V diluted magnetic semiconductors (DMS), treating the impurity spins fully quantum mechanically in the coherent potential approximation (CPA). Our CPA results show an interesting dependence of the optical conductivity on Kondo coupling, carrier density, nonmagnetic potential, and temperature. We find that by taking into account the spin-flip effect, the calculated conductivity is in reasonable agreement with the ones obtained by Monte-Carlo simulations and experiments. (c) 2007 Elsevier B.V. All rights reserved.
机译:我们研究了(III,Mn)V稀释磁性半导体(DMS)的单能带模型的光学特性,以相干势近似(CPA)的方式完全机械地处理了杂质自旋。我们的CPA结果显示出光导率对近藤耦合,载流子密度,非磁势和温度的有趣依赖性。我们发现,考虑到自旋翻转效应,计算出的电导率与通过蒙特卡洛模拟和实验获得的电导率是合理一致的。 (c)2007 Elsevier B.V.保留所有权利。

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