Scanning tunneling microscopy of superconducting topological surface states in Bi2Se3

@article{Dayton2016ScanningTM,
  title={Scanning tunneling microscopy of superconducting topological surface states in Bi2Se3},
  author={Ian M. Dayton and N. Sedlmayr and Victor Ramirez and T. Chasapis and R. Loloee and M. Kanatzidis and A. Levchenko and S. Tessmer},
  journal={Physical Review B},
  year={2016},
  volume={93},
  pages={220506}
}
In this paper we present scanning tunneling microscopy of a large $\textrm{Bi}_2\textrm{Se}_3$ 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… Expand
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