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Phys. Rev. B 60, 3037–3039 (1999)

Comparative study of the magnetoresistance of MBE-grown multilayers: [Fe/Cu/Co/Cu]N and [Fe/Cu]N[Co/Cu]N

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D. Bozec, M. J. Walker, B. J. Hickey, and M. A. Howson
Department of Physics and Astronomy, E. C. Stoner Laboratory, University of Leeds, Leeds LS2 9JT, United Kingdom

Nathan Wiser
Department of Physics, Jack and Pearl Resnick Institute for Advanced Technology, Bar-Ilan University, Ramat-Gan 52900, Israel

Received 18 December 1998; published in the issue dated 1 August 1999

We have carried out measurements of the magnetic-field dependence of the magnetoresistance [MR(H)] in the current perpendicular to the plane (CPP) mode for magnetic multilayers having the following configurations: [Fe/Cu/Co/Cu]N and [Fe/Cu]N[Co/Cu]N. The two configurations had the same number, types, and thicknesses of magnetic and nonmagnetic layers; their only difference lay in the ordering of the magnetic layers. Nevertheless, the measured MR(H) curves are found to be completely different for the two configurations. The implications of these results are discussed for the spin-diffusion length.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.60.3037
DOI:
10.1103/PhysRevB.60.3037
PACS:
75.70.Pa, 75.70.-i, 73.40.-c