Noncollinear order contribution to the exchange coupling in Fe/Cr(001) superlattices

被引：23
|
作者：
Freyss, M
Stoeffler, D
Dreysse, H
机构：
[1] Institut de Physique et de Chimie des Matériaux de Strasbourg, Groupe dșEtude des Matériaux Métalliques, UMR 46 du CNRS, Université Louis Pasteur, 67037 Strasbourg Cedex, 23, rue du Loess
来源：
PHYSICAL REVIEW B | 1996年 / 54卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.54.R12677
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By means of a d-band tight-binding Hamiltonian, we calculate the noncollinear distribution of magnetic moments in Fe/Cr superlattices, as a function of the relative orientation Delta phi of the magnetic moments at the center of two adjacent Fe layers. All magnetic moments are computed self-consistently in both magnitude and angle. We find that for thick layers of a Cr spacer, the total energy varies parabolically as a function of Delta phi, in accordance with the phenomenological proximity magnetism model proposed by Slonczewski. However, this model is not entirely satisfied for small Cr thicknesses because of the assumptions made in it.
引用
收藏
页码：12677 / 12680
页数：4
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