Nonhomogeneous magnetic order in superconductor-ferromagnet multilayers

F. S. Bergeret, K. B. Efetov, and A. I. Larkin
Phys. Rev. B 62, 11872 – Published 1 November 2000
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Abstract

We study the possibility of a nonhomogeneous magnetic order [cryptoferromagnetic (CF) state] in heterostructures consisting of a bulk superconductor and a ferromagnetic thin layer, due to the influence of the superconductor. The exchange field in the ferromagnet may be strong and exceed the inverse mean free time. An approach based on solving the Eilenberger equations in the ferromagnet and the Usadel equations in the superconductor is developed. We derive a phase diagram between the cryptoferromagnetic and ferromagnetic states and discuss the possibility of an experimental observation of the CF state in different materials.

  • Received 10 May 2000

DOI:https://doi.org/10.1103/PhysRevB.62.11872

©2000 American Physical Society

Authors & Affiliations

F. S. Bergeret1, K. B. Efetov1,2, and A. I. Larkin1,2,3

  • 1Theoretische Physik III, Ruhr-Universität Bochum, 44780 Bochum, Germany
  • 2L. D. Landau Institute for Theoretical Physics, 117940 Moscow, Russia
  • 3Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455

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Issue

Vol. 62, Iss. 17 — 1 November 2000

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