Ferromagnetism and its stability in the diluted magnetic semiconductor (In,Mn)As

被引：755

作者：

Akai, H ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Sci, Dept Phys, Osaka 5600043, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.81.3002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Carrier-induced ferromagnetism in the doped diluted magnetic semiconductors (In,Mn up arrow,Mn down arrow, A)As, where A is As or Sn and Mn up arrow (Mn down arrow) denotes Mn atoms whose local magnetic moment is parallel (antiparallel) to the magnetization, are investigated using the Korringa-Kohn-Rostoker coherent-potential approximation and local density approximation first-principles calculation. The result shows that (i) the ferromagnetic state is stable due to the double exchange at low concentrations of A,and (ii) a spin-glass-like local-moment disordered state, which stems from the superexchange, is more favorable when the Mn d holes are nearly compensated.

引用

页码：3002 / 3005

页数：4

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