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 - Condensed Matter and Materials Physics |
| Volume | 93 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - Jun 20 2016 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Scanning tunneling microscopy of superconducting topological surface states in Bi2Se3. / Dayton, Ian M.; Sedlmayr, Nicholas; Ramirez, Victor; Chasapis, Thomas C.; Loloee, Reza; Kanatzidis, Mercouri G; Levchenko, Alex; Tessmer, Stuart H.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 93, No. 22, 220506, 20.06.2016.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Scanning tunneling microscopy of superconducting topological surface states in Bi2Se3
AU - Dayton, Ian M.
AU - Sedlmayr, Nicholas
AU - Ramirez, Victor
AU - Chasapis, Thomas C.
AU - Loloee, Reza
AU - Kanatzidis, Mercouri G
AU - Levchenko, Alex
AU - Tessmer, Stuart H.
PY - 2016/6/20
Y1 - 2016/6/20
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84976616225&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84976616225&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.93.220506
DO - 10.1103/PhysRevB.93.220506
M3 - Article
AN - SCOPUS:84976616225
VL - 93
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 22
M1 - 220506
ER -