Orbital Picture of Yu-Shiba-Rusinov Multiplets

Abstract

We investigate the nature of Yu-Shiba-Rusinov (YSR) subgap states induced by single Manganese (Mn) atoms adsorbed on different surface orientations of superconducting lead (Pb). Depending on the adsorption site, we detect a distinct number and characteristic patterns of YSR states around the Mn atoms. We suggest that the YSR states inherit their properties from the Mn $d$-levels, which are split by the surrounding crystal field. The periodicity of the long-range YSR oscillations allows us to identify a dominant coupling of the d-states to the outer Fermi sheet of the two-band superconductor Pb.

5 pages, 4 figures + supplemental material

References in corpus (4)

• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Experimental demonstration of a two-band superconducting state for lead using scanning tunneling spectroscopy
• Magnetic anisotropy effects on quantum impurities in superconducting host
• Impurity-induced bound states in superconductors with spin-orbit coupling

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