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Title Tunneling processes into localized subgap states in superconductors
Authors M. Ruby, F. Pientka, Y. Peng, F. von Oppen, B. W. Heinrich, K. J. Franke
Journal Physical Review Letters
Vol. 115, 2015, pg. 087001


Abstract We combine scanning-tunneling-spectroscopy experiments probing magnetic impurities on a superconducting surface with a theoretical analysis of the tunneling processes between (superconducting) tip and substrate. We show that the current is carried by single-electron tunneling at large tip-substrate distances and Andreev reflections at smaller distances. The single-electron current requires relaxation processes between the impurity-induced Shiba bound state and the quasiparticle continuum, allowing us to extract information on such relaxation processes from our analysis.



BibTeX entry
    @article{ AGP-2015:85,
      title = { Tunneling processes into localized subgap states in superconductors },
      author = { M. Ruby, F. Pientka, Y. Peng, F. von Oppen, B. W. Heinrich, K. J. Franke },
      journal = { Physical Review Letters },
      volume = { 115 },
      year = { 2015 },
      pages = { 087001-- },
    }