Photomaganetization in diluted magnetic semiconductors

被引：3

作者：

Tripathi, GS

Mahanty, BG

Behera, SN ^{[1
]}

机构：

[1] Inst Phys, Bhubaneswar 751005, Orissa, India

[2] RCM Sci Coll, Dept Phys, Khallikote 761030, Orissa, India

[3] Berhampur Univ, Dept Phys, Berhampur 760007, Orissa, India

来源：

PHASE TRANSITIONS | 2005年 / 78卷 / 1-3期

关键词：

photomagnetization; diluted magnetic semiconductors; spin-excitons;

D O I：

10.1080/01411590412331316564

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Starting from a many-body Hamiltonian for a system of photogenerated electrons and holes, spin-split by magnetic ions in diluted magnetic semiconductors, we derive, presumably for the first time, an expression for the photomagnetization as a function of the photon power, frequency, excitonic interaction and the magnetic ion concentration. Damping of nonequilibrium carriers and spin excitons is considered phenomenologically. Our results agree qualitatively with some of the systematics of the photomagnetization observed in Hg1-xMnxTe.

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页码：229 / 237

页数：9

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