Nonmagnetic (antiferromagnetic) magnetic polaron

被引：4

作者：

Merkulov, IA ^{[1
]}

机构：

[1] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

来源：

PHYSICS OF THE SOLID STATE | 2000年 / 42卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1131180

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

It is shown that, within deep narrow quantum potential wells in systems based on semimagnetic semiconductors containing Mn2+ ions, both magnitude and sign of the exchange interaction between electrons in the conduction band and in the d-shell of a magnetic ion depend significantly on the spatial position of this ion. This situation allows magnetic polarons with zero magnetic moment to appear, for which the localized-electron-induced spatial distribution of polarization of the surrounding magnetic ions exhibits an antiferromagnetic character. The possibility of experimental detection of these "nonmagnetic" magnetic polarons is considered. (C) 2000 MAIK "Nauka/Interperiodica".

引用

页码：132 / 138

页数：7

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