Polley, C. M., Jovic, V., Su, T. -Y., Saghir, Mohammad, Newby, D., Kowalski, B. J., Jakiela, R., Barcz, A., Guziewicz, M., Balasubramanian, T., Balakrishnan, Geetha, Laverock, J. and Smith, K. E. (2016) Observation of surface states on heavily indium-doped SnTe(111), a superconducting topological crystalline insulator. Physical Review B, 93 (7). 075132 . doi:10.1103/PhysRevB.93.075132 ISSN 2469-9950.
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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.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics |
| Library of Congress Subject Headings (LCSH): | Tellurium compounds, Surfaces (Physics) , Superconductivity, Indium |
| Journal or Publication Title: | Physical Review B |
| Publisher: | American Physical Society |
| ISSN: | 2469-9950 |
| Official Date: | 18 February 2016 |
| Dates: | Date Event 18 February 2016 Published 25 January 2016 Accepted |
| Volume: | 93 |
| Number: | 7 |
| Article Number: | 075132 |
| DOI: | 10.1103/PhysRevB.93.075132 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Copyright Holders: | American Physical Society |
| Date of first compliant deposit: | 24 April 2017 |
| Date of first compliant Open Access: | 24 April 2017 |
| Funder: | Knut och Alice Wallenbergs Stiftelse (Sweden), Sweden. Vetenskapsrådet [Research Council], Engineering and Physical Sciences Research Council (EPSRC), United States. Department of Energy |
| Grant number: | EP/L014963/1 (EPSRC), DE-FG02-98ER45680, DE-AC02-98CH10886 (Department of Energy) |
| URI: | https://wrap.warwick.ac.uk/87827/ |
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