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Tunneling processes into localized subgap states in superconductors
- Source :
- Phys. Rev. Lett. 115, 087001 (2015)
- Publication Year :
- 2015
-
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.<br />Comment: 4+ pages, 3 figures; supplementary material: 18 pages, 9 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 115, 087001 (2015)
- Publication Type :
- Report
- Accession number :
- edsarx.1502.05048
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.115.087001