Superconducting/ferromagnetic diffusive bilayer with a spin-active interface: a numerical study

Details Superconducting/ferromagnetic diffusive bilayer with a spin-active interface: a numerical study Superconducting/ferromagnetic diffusive bilayer with a spin-active interface: a numerical study

2008-10-06

arxiv.org/abs/0810.0904v3

Phys. Rev. B 79, 054518 (2009)

Physics

Condensed Matter

Superconductivity

7 pages, 6 figures, revised version

Scientific paper

10.1103/PhysRevB.79.054518

We calculate the density of states (DOS) in a diffusive superconducting/ferromagnetic bilayer with a spin-active interface. We use a self-consistent numerical treatment to make a systematic study of the effects of the Spin-Dependence of Interfacial Phase Shifts (SDIPS) on the self-consistent superconducting gap and the DOS. Strikingly, we find that the SDIPS can induce a double gap structure (DGS) in the DOS of the ferromagnet, even when the superconducing layer is much thicker than the superconducting coherence lenght. We thus obtain DOS curves which have interesting similarities with those of Phys. Rev. Lett. 100, 237002 (2008).

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