Oscillations of Andreev states in clean ferromagnetic films

Abstract

We investigate the influence of the exchange field on the Andreev bound states in a ferromagnetic (F) film backed on one side by a superconductor (S). Our model accounts for diffusive reflection at the outer surface and possible backscattering at the FS-interface. Phase shifting of the Andreev level by the exchange field results in an oscillatory behaviour of the density of states of F as a function of the layer thickness. We show that our results agree quantitatively with recent experiments.

4 pages, RevTeX, 4 figures (eps)

References in corpus (2)

• The excitation spectrum of mesoscopic proximity structures
• Superconducting and Magnetic Properties of Nb/Pd_1-xFe_x/Nb Triple Layers

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