Interlayer exchange coupling: a comparison of two theoretical concepts

被引：1
|
作者：
Opitz, J [1 ]
Zahn, P [1 ]
Mertig, I [1 ]
机构：
[1] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden, Germany
来源：
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1998年 / 78卷 / 5-6期
关键词：
D O I：
10.1080/13642819808206759
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Interlayer exchange coupling (IEC) is calculated for Co/Cu and Ni/Cu(100) multilayers. The calculations are based on density functional theory using two different Green function methods. Results of a supercell formulation with periodically repeated layers are compared to results for bilayers treated as planar perturbations. The coupling energy is obtained employing a frozen potential approximation. It will be shown that the results of both methods are in good agreement concerning the oscillation periods. Slight variations of the amplitude might be caused by additional multiple scattering effects in the superlattice.
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收藏
页码：557 / 564
页数：8
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