Oscillations of Andreev states in clean ferromagnetic films

Details Oscillations of Andreev states in clean ferromagnetic films Oscillations of Andreev states in clean ferromagnetic films

2000-10-05

arxiv.org/abs/cond-mat/0010089v1

Phys. Rev. Lett. 86, 308 (2001)

Physics

Condensed Matter

Superconductivity

4 pages, RevTeX, 4 figures (eps)

Scientific paper

10.1103/PhysRevLett.86.308

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.

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