First-principles calculations of optical and magneto-optical properties of Ga1-xMnxAs and MnAs

被引：8
|
作者：
Amft, M. [1 ]
Burkert, T. [1 ]
Sanyal, B. [1 ]
Oppeneer, P. M. [1 ]
机构：
[1] Uppsala Univ, Dept Phys & Mat Sci, S-75121 Uppsala, Sweden
来源：
PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 20期
基金：
瑞典研究理事会;
关键词：
Half-metallic ferromagnet; Diluted magnetic semiconductor (DMS); Magneto-optical Kerr effect (MOKE); Magnetic circular dichroism (MCD); SPECTRA; GAAS; GAP; SI; CO;
D O I：
10.1016/j.physb.2009.06.141
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We present a first-principles density-functional investigation of the optical and magneto-optical properties of MnGa1-xAs (with x = 0,0.0625, and 1) systems. Our calculated dielectric function, magneto-optical Kerr effect, and magnetic circular dichroism spectra agree reasonably well with existing experimental results. A comparison of the optical and magneto-optical spectra of MnAs in the naturally occurring hexagonal phase and in the cubic zinc-blende structure is made. The differences in the spectral properties of these two phases could aid detection of MnAs in the zinc-blende structure. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：3782 / 3788
页数：7
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