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Oscillatory Magnetic Exchange Coupling Through Thin Copper Layers.

Parkin, Bhadra, Roché
Published 1991 · Materials Science, Medicine

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Confirming theoretical predictions more than 25 years old, we show that Co slabs are indirectly exchanged 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 A. Moreover, the antiferromagnetically coupled Co/Cu superlattices exhibit extraordinarily large saturation magnetoresistances at 300 K of more than 65%



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