Interlayer exchange coupling and perpendicular electric transport in Fe/Si/Fe trilayers

被引：22
作者：
Herper, HC
Weinberger, P
Szunyogh, L
Sommers, C
机构：
[1] Ctr Computat Mat Sci, A-1060 Vienna, Austria
[2] Budapest Univ Technol & Econ, Dept Theoret Phys, H-1521 Budapest, Hungary
[3] Univ Paris 11, Phys Solides Lab, F-91405 Orsay, France
来源：
PHYSICAL REVIEW B | 2002年 / 66卷 / 06期
关键词：
D O I：
10.1103/PhysRevB.66.064426
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The interlayer exchange coupling and the perpendicular magnetoresistance of Fe/Si/Fe systems have been investigated within the fully relativistic screened Korringa-Kohn-Rostoker method and the Kubo-Greenwood equation considering interdiffusion effects, i.e., inhomogeneous Fe-Si alloy formation at the interfaces. It is shown that the experimentally observed strong antiferromagnetic interlayer exchange coupling is caused by the formation of Fe-Si alloys at the interface. Furthermore, our calculations give evidence that the small magnetoresistance, which has been observed experimentally in Fe/Si/Fe trilayers has a similar origin. The results presented here give no evidence for a direct connection between the magnetoresistance and interlayer exchange coupling in Fe/Si/Fe systems.
引用
收藏
页码：644261 / 644268
页数：8
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