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
Phys. Rev. Lett. 64, 2304 – Published 7 May 1990
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Abstract

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.

  • Received 27 November 1989

DOI:https://doi.org/10.1103/PhysRevLett.64.2304

©1990 American Physical Society

Authors & Affiliations

S. S. P. Parkin, N. More, and K. P. Roche

  • IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120-6099

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Vol. 64, Iss. 19 — 7 May 1990

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