Magnetic multilayers of Fe/Au: role of the electron mean free path

被引:7
作者
Howson, MA [1 ]
Hickey, BJ
Garfield, J
Xu, J
Ryan, PA
Greig, D
Yelon, A
Wiser, N
机构
[1] Univ Leeds, Dept Phys & Astron, EC Stoner Lab, Leeds LS2 9JT, W Yorkshire, England
[2] Bar Ilan Univ, Dept Phys, Jack & Pearl Resnick Inst Adv Technol, Ramat Gan, Israel
关键词
D O I
10.1088/0953-8984/11/30/304
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The giant magnetoresistance (GMR) was measured for Fe/Au magnetic multilayers in both the CIP and CPP configurations, for a series of samples each having the same thickness for the Fe layers (10 Angstrom) but a different thickness for the Au layers (in the range 20-50 Angstrom). It was found that the GMR is only a few per cent in the CIP configuration, whereas the GMR ranges from 20 to 80% in the CPP configuration. We attribute this order-off-magnitude difference in the values of the GMR for the two configurations to the short electron mean free path, resulting from the relatively high resistivity of these multilayers. A short electron mean free path reduces sharply the value of the GMR in the CIP configuration, while leaving unchanged the value of the GMR in the CPP configuration.
引用
收藏
页码:5717 / 5722
页数:6
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