期刊
PHYSICAL REVIEW B
卷 79, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.054518
关键词
coherence length; electronic density of states; ferromagnetism; interface states; superconducting energy gap; superconducting materials
资金
- Research Council of Norway [158518/431, 158547/431, 167498/V30]
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 in the DOS of the ferromagnet, even when the superconducing layer is much thicker than the superconducting coherence length. We thus obtain DOS curves which have interesting similarities with those of SanGiorgio [Phys. Rev. Lett. 100, 237002 (2008)].
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