Oscillatory magnetic exchange coupling through thin copper layers

S. S. P. Parkin, R. Bhadra, and K. P. Roche
Phys. Rev. Lett. 66, 2152 – Published 22 April 1991
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Abstract

Confirming theoretical predictions more than 25 years old, we show that Co slabs are indirectly exchange coupled via thin Cu layers with a coupling that alternates back and forth between antiferromagnetic and ferromagnetic. Four oscillations are observed with a period of ≃10 Å. Moreover, the antiferromagnetically coupled Co/Cu superlattices exhibit extraordinarily large saturation magnetoresistances at 300 K of more than 65%.

  • Received 24 September 1990

DOI:https://doi.org/10.1103/PhysRevLett.66.2152

©1991 American Physical Society

Authors & Affiliations

S. S. P. Parkin, R. Bhadra, and K. P. Roche

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

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Issue

Vol. 66, Iss. 16 — 22 April 1991

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