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VOLUME 109 (2019) | ISSUE 1 | PAGE 61
Reconstruction of the DOS at the end of a S/F bilayer
DOI: 10.1134/S0370274X19010119
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.