Enhancement of magnetic coercivity and ferromagnetic transition temperature by proximity effects in the GaMnAs-ZnMnSe multilayer system

被引：29

作者：

Liu, X ^{[1
]}

Sasaki, Y ^{[1
]}

Furdyna, JK ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 15期

关键词：

D O I：

10.1063/1.1409587

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the degree to which the ferromagnetic properties of GaMnAs can be modified by the proximity of a Mn-based magnetic layer in which the Mn-Mn interactions are aniferromagnetic. Epitaxial GaMnAs capped with ZnMnSe was used for this purpose. We observed that the presence of the ZnMnSe overlayer leads to a dramatic modification of the coercive field of GaMnAs, which remains high almost up to the Curie temperature. The presence of ZnMnSe overlayers also leads to a significant increase in the Curie temperature of GaMnAs, as compared to "bare" GaMnAs. (C) 2001 American Institute of Physics.

引用

页码：2414 / 2416

页数：3