Systematic study of magnetic linear dichroism and birefringence in (Ga,Mn)As

被引：32

作者：

Tesarova, N. ^{[1
]}

Ostatnicky, T. ^{[1
]}

Novak, V. ^{[2
]}

Olejnik, K. ^{[2
]}

Subrt, J. ^{[1
]}

Reichlova, H. ^{[1
,2
]}

Ellis, C. T. ^{[3
]}

Mukherjee, A. ^{[3
]}

Lee, J. ^{[3
]}

Sipahi, G. M. ^{[3
,4
]}

Sinova, J. ^{[2
,5
]}

Hamrle, J. ^{[6
,7
]}

Jungwirth, T. ^{[2
,8
]}

Nemec, P. ^{[1
]}

Cerne, J. ^{[3
]}

Vyborny, K. ^{[2
,3
]}

机构：

[1] Charles Univ Prague, Fac Math & Phys, CZ-12116 Prague, Czech Republic

[2] ASCR, Vvi, Inst Phys, CZ-16253 Prague 6, Czech Republic

[3] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA

[4] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[5] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[6] Tech Univ Ostrava, Dept Phys, CZ-70833 Ostrava, Czech Republic

[7] Tech Univ Ostrava, Nanotechnol Ctr, CZ-70833 Ostrava, Czech Republic

[8] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 08期

基金：

巴西圣保罗研究基金会; 美国国家科学基金会;

关键词：

SPIN REORIENTATION; SEMICONDUCTORS; ANISOTROPY; PERMITTIVITY; TENSOR; GAAS;

D O I：

10.1103/PhysRevB.89.085203

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic linear dichroism and birefringence in (Ga,Mn)As epitaxial layers is investigated by measuring the polarization plane rotation of reflected linearly polarized light when magnetization lies in the plane of the sample. We report on the spectral dependence of the rotation and ellipticity angles in a broad energy range of 0.12-2.7 eV for a series of optimized samples covering a wide range on Mn dopings and Curie temperatures and find a clear blueshift of the dominant peak at energy exceeding the host material band gap. These results are discussed within the framework of the k . p and mean-field kinetic-exchange model of the (Ga, Mn) As band structure. We infer that disorder-induced nondirect transitions significantly influence magneto-optical properties of (Ga,Mn)As.

引用

页数：14

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