Abstract
In this Rapid Communication we present scanning tunneling microscopy of a large Bi2Se3 crystal with superconducting PbBi islands deposited on the surface. Local density of states measurements are consistent with induced superconductivity in the topological surface state with a coherence length of order 540 nm. At energies above the gap the density of states exhibits oscillations due to scattering caused by a nonuniform order parameter. Strikingly, the spectra taken on islands also display similar oscillations along with traces of the Dirac cone, suggesting an inverse topological proximity effect.
| Original language | English |
|---|---|
| Article number | 220506 |
| Journal | Physical Review B |
| Volume | 93 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - Jun 20 2016 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Dayton, I. M., Sedlmayr, N., Ramirez, V., Chasapis, T. C., Loloee, R., Kanatzidis, M. G., Levchenko, A., & Tessmer, S. H. (2016). Scanning tunneling microscopy of superconducting topological surface states in Bi2Se3. Physical Review B, 93(22), [220506]. https://doi.org/10.1103/PhysRevB.93.220506