Reconstruction of the DOS at the end of a S/F bilayer

Abstract

Influence of a nonmagnetic surface on the density of states in a spin-split superconductor, which is realized on the basis of a S/F bilayer, is investigated. It is demonstrated that if the ferromagnet magnetization has a defect in the form of a domain wall in the vicinity of the surface, the superconducting density of states is reconstructed manifesting the spin-split Andreev resonances. Formation of these resonances is not connected to any superconducting order parameter inhomogeneities. Andreev reflection processes forming the resonances occur at the inhomogeneity of the spin-split gap generated by the domain wall. These resonances can be used as a spectroscopic probe of a domain wall presence and motion.

6 pages, 6 figures

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Cited by in corpus (5)

• Superconductivity near a magnetic domain wall
• Anomalous current-voltage characteristics of SFIFS Josephson junctions with weak ferromagnetic interlayers
• Quasiparticle density of states and triplet correlations in superconductor/ferromagnetic-insulator structures across a sharp domain wall
• Signatures of spin-triplet Cooper pairing in the density of states of spin-textured superconductor-ferromagnet bilayers
• Magnon influence on the superconducting density of states in superconductor$-$ferromagnetic-insulator bilayers