Phys. Rev. Lett. 64, 2304-2307 (1990)


[Issue 19 - May 1990 ]

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Oscillations in exchange coupling and magnetoresistance in metallic
superlattice structures: Co/Ru, Co/Cr, and Fe/Cr

       S. S. P. Parkin, N. More, and K. P. Roche 
       IBM Almaden Research Center, 650 Harry Road, San Jose, California
95120-6099

Received 27 November 1989

We report the discovery of antiferromagnetic interlayer exchange coupling
and enhanced saturation magnetoresistance in two new metallic superlattice
systems, Co/Cr and Co/Ru. In these systems and in Fe/Cr superlattices
both the magnitude of the interlayer magnetic exchange coupling and the
saturation magnetoresistance are found to oscillate with the Cr or Ru
spacer layer thickness with a period ranging from 12 Å in Co/Ru to ~=18-21
Å in
the Fe/Cr and Co/Cr systems.

©1990 The American Physical Society

URL: http://publish.aps.org/abstract/PRL/v64/p2304
PACS: 75.50.Rr, 72.15.Gd, 75.70.Cn