Ferromagnetic superexchange in Cr-based diluted magnetic semiconductors

被引：126

作者：

Blinowski, J

Kacman, P

Majewski, JA

机构：

[1] POLISH ACAD SCI, INST PHYS, PL-02668 WARSAW, POLAND

[2] TECH UNIV MUNCHEN WEIHENSTEPHAN, WALTER SCHOTTKY INST, D-85748 GARCHING, GERMANY

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.53.9524

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A theory of superexchange in Cr-based A(II)B(VI) diluted magnetic semiconductors (DMS's) is presented. The spin interaction between Cr2+ ions, calculated numerically for zinc chalcogenides, exhibits properties unique in DMS's, it is ferromagnetic, and depends on the relative orientations of the ionic Jahn-Teller distortions. We explain the origin of this unusual behavior and predict a ferromagnetic character of the superexchange in other Cr-based A(II)B(VI) DMS's.

引用

页码：9524 / 9527

页数：4

共 28 条

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[2]

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