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Phys. Rev. Lett. 67, 493–496 (1991)

[Issue 4 – 22 July 1991 ]

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Oscillations of the exchange in magnetic multilayers as an analog of de Haas–van Alphen effect

D. M. Edwards

Department of Mathematics, Imperial College, London SW7 2BZ, United Kingdom

J. Mathon, R. B. Muniz, and M. S. Phan

Department of Mathematics, City University, London EC1V 0HB,United Kingdom

A theory of oscillations in the exchange coupling between two transition-metal ferromagnets separated by a nonmagnetic transition-metal spacer is developed for a one-band model. A close analogy between oscillations in the exchange and de Haas–van Alphen oscillations is established and exploited to show that the period, asymptotic decay, and temperature dependence of the oscillations are determined by properties of the Fermi surface in the spacer layer. The theory describes many features of the oscillations in the exchange coupling observed recently in Co/Ru, Co/Cr, and Fe/Cr superlattices.

©1991 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v67/p493
DOI: 10.1103/PhysRevLett.67.493
PACS: 75.70.Fr, 75.30.Et, 75.50.Rr

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See Also:

Erratum: D. M. Edwards, J. Mathon, R. B. Muniz, and M. S. Phan, Oscillations of the Exchange in Magnetic Multilayers as an Analog of de Haas-van Alphen Effect, Phys. Rev. Lett. 67, 1476 (1991).

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