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

Authors
GURNEY BA SPERIOSU VS NOZIERES JP LEFAKIS H WILHOIT DR NEED OU
Citation
Ba. Gurney et al., DIRECT MEASUREMENT OF SPIN-DEPENDENT CONDUCTION-ELECTRON MEAN FREE PATHS IN FERROMAGNETIC METALS, Physical review letters, 71(24), 1993, pp. 4023-4026
Citations number
33
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
71
Issue
24
Year of publication
1993
Pages
4023 - 4026
Database
ISI
SICI code
0031-9007(1993)71:24<4023:DMOSCM>2.0.ZU;2-P
Abstract
Using a new giant magnetoresistance structure we measure the spin-up m ean free paths of ferromagnetic metals. At room temperature we find fo r 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 p aths, 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 si milar to 6 angstrom.