Interlayer exchange coupling mediated by valence-band electrons

被引：34

作者：

Blinowski, J

Kacman, P

机构：

[1] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland

[2] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.64.045302

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The interlayer exchange coupling mediated by valence-band electrons in all-semiconductor IV-VI magnetic/ nonmagnetic superlattices is studied theoretically. A three-dimensional tight-binding model, accounting for the band and magnetic structure of the constituent superlattice components is used to calculate the spin-dependent part of the total electronic energy. The antiferromagnetic coupling between ferromagnetic layers in EuS/PbS superlattices is obtained, in agreement with the experimental evidences. The results obtained for the coupling between antiferromagnetic layers in EuTe/PbTe superlattices are also presented.

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页数：7

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