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DIRECT MEASUREMENT OF SPIN-DEPENDENT CONDUCTION-ELECTRON MEAN FREE PATHS IN FERROMAGNETIC METALS

被引：163
作者：
GURNEY, BA
SPERIOSU, VS
NOZIERES, JP
LEFAKIS, H
WILHOIT, DR
NEED, OU
机构：
[1] IBM Research Division, Almaden Research Center, San Jose, CA 95120-6099
来源：
PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.71.4023
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using a new giant magnetoresistance structure we measure the spin-up mean free paths of ferromagnetic metals. At room temperature we find for Co lambda+ = 55+/-4 angstrom, for Fe lambda+ = 15+/-2 angstrom, and for Ni80Fe20 alloy lambda+ = 46+/-3 angstrom. Combining these results with the Mott picture of transport we deduce the spin-down mean free paths, and find for Co lambda- less than or similar to 6 angstrom, for Fe lambda- = 21+/-5 angstrom, and for Ni80Fe20 lambda- less than or similar to 6 angstrom.
引用
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页码：4023 / 4026
页数：4
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