Orbital Picture of Yu-Shiba-Rusinov Multiplets.


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.

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@article{Ruby2016OrbitalPO, title={Orbital Picture of Yu-Shiba-Rusinov Multiplets.}, author={Michael Ruby and Yang Peng and Felix von Oppen and Benjamin W Heinrich and Katharina J. Franke}, journal={Physical review letters}, year={2016}, volume={117 18}, pages={186801} }