Can correlated substitution enhance the Curie temperature in diluted magnetic semiconductors?

被引：33

作者：

Bouzerar, G

Ziman, T

Kudrnovsky, J

机构：

[1] Inst Laue Langevin, F-38042 Grenoble, France

[2] Acad Sci Czech Republ, Inst Phys, CZ-18221 Prague 8, Czech Republic

[3] CNRS, F-75700 Paris, France

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 21期

关键词：

D O I：

10.1063/1.1826226

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a quantitative theory for ferromagnetism in diluted magnetic semiconductors under the assumption that the positions of the substitutional magnetic impurities are correlated. The theory predicts that room-temperature ferromagnetism should be possible in macroscopically homogeneous samples of MnxGa1-xAs if the probability of pairs of Mn impurities on neighboring Ga sites is sufficiently enhanced. The theory predicts similar increases in the Curie temperatures for MnxGa1-xN but the temperatures remain lower than in MnxGa1-xAs. (C) 2004 American Institute Of Physics.

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页码：4941 / 4943

页数：3

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