CHROMIUM-BASED DILUTED MAGNETIC SEMICONDUCTORS

被引：25

作者：

BHATTACHARJEE, AK

机构：

[1] Laboratoire de Physique des Solides, Université de ParisSud

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.49.13987

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Zeeman splitting of the valence band of a cubic Cr-based diluted magnetic semiconductor is studied within an effective Hamiltonian for the hybridization-induced hole-ion interaction that includes orbital coupling terms. The static Jahn-Teller distortion tends to quench the orbital contribution. The subband ordering is the same as in the Kondo-like spin-exchange model, but the overall splitting is reduced. We also compute the magnetization. Comparison with recently published magnetoreflectance and magnetization data in Zn1-xCrxSe shows excellent agreement. The anomalous sign (ferromagnetic) of the effective p-d exchange is explained.

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页码：13987 / 13990

页数：4

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