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Observation of surface states on heavily indium-doped SnTe(111), a superconducting topological crystalline insulator

Polley, C. M. LU ; Jovic, V.; Su, T. Y.; Saghir, M. LU ; Newby, D.; Kowalski, B. J. LU ; Jakiela, R.; Barcz, A.; Guziewicz, M. and Thiagarajan, Balasubramanian LU , et al. (2016) In Physical Review B (Condensed Matter and Materials Physics) 93(7).
Abstract

The topological crystalline insulator tin telluride is known to host superconductivity when doped with indium (Sn1-xInxTe), and for low indium content (x=0.04) it is known that the topological surface states are preserved. Here we present the growth, characterization, and angle resolved photoemission spectroscopy analysis of samples with much heavier In doping (up to x≈0.4), a regime where the superconducting temperature is increased nearly fourfold. We demonstrate that despite strong p-type doping, Dirac-like surface states persist.

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Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
93
issue
7
publisher
American Physical Society
external identifiers
  • Scopus:84960155238
ISSN
1098-0121
DOI
10.1103/PhysRevB.93.075132
language
English
LU publication?
yes
id
e7998539-d983-414d-9d72-e621b3646614
date added to LUP
2016-07-14 13:50:23
date last changed
2016-11-02 15:14:30
@misc{e7998539-d983-414d-9d72-e621b3646614,
  abstract     = {<p>The topological crystalline insulator tin telluride is known to host superconductivity when doped with indium (Sn1-xInxTe), and for low indium content (x=0.04) it is known that the topological surface states are preserved. Here we present the growth, characterization, and angle resolved photoemission spectroscopy analysis of samples with much heavier In doping (up to x≈0.4), a regime where the superconducting temperature is increased nearly fourfold. We demonstrate that despite strong p-type doping, Dirac-like surface states persist.</p>},
  author       = {Polley, C. M. and Jovic, V. and Su, T. Y. and Saghir, M. and Newby, D. and Kowalski, B. J. and Jakiela, R. and Barcz, A. and Guziewicz, M. and Thiagarajan, Balasubramanian and Balakrishnan, G. and Laverock, J. and Smith, K. E.},
  issn         = {1098-0121},
  language     = {eng},
  month        = {02},
  number       = {7},
  publisher    = {ARRAY(0xa2fb258)},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Observation of surface states on heavily indium-doped SnTe(111), a superconducting topological crystalline insulator},
  url          = {http://dx.doi.org/10.1103/PhysRevB.93.075132},
  volume       = {93},
  year         = {2016},
}