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

C. M. Polley; V. Jovic; T. Y. Su; M. Saghir; D. Newby; B. J. Kowalski; R. Jakiela; A. Barcz; M. Guziewicz; T. Balasubramanian; G. Balakrishnan; J. Laverock; K. E. Smith

doi:10.1103/PhysRevB.93.075132

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

C. M. Polley
, V. Jovic
, T. Y. Su
, M. Saghir
, D. Newby
, B. J. Kowalski
, R. Jakiela
, A. Barcz
, M. Guziewicz
, T. Balasubramanian
, G. Balakrishnan
, J. Laverock
, K. E. Smith

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

29 Citations (Scopus)

336 Downloads (Pure)

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.

Original language	English
Article number	075132
Journal	Physical Review B
Volume	93
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.93.075132
Publication status	Published - 18 Feb 2016

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Physical & Theoretical

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Polley, C. M., Jovic, V., Su, T. Y., Saghir, M., Newby, D., Kowalski, B. J., Jakiela, R., Barcz, A., Guziewicz, M., Balasubramanian, T., Balakrishnan, G., Laverock, J., & Smith, K. E. (2016). Observation of surface states on heavily indium-doped SnTe(111), a superconducting topological crystalline insulator. Physical Review B, 93(7), Article 075132. https://doi.org/10.1103/PhysRevB.93.075132

@article{a706fab204764f74acf922eee374f7ab,

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

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.",

author = "Polley, \{C. M.\} and V. Jovic and Su, \{T. Y.\} and M. Saghir and D. Newby and Kowalski, \{B. J.\} and R. Jakiela and A. Barcz and M. Guziewicz and T. Balasubramanian and G. Balakrishnan and J. Laverock and Smith, \{K. E.\}",

year = "2016",

month = feb,

day = "18",

doi = "10.1103/PhysRevB.93.075132",

language = "English",

volume = "93",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society (APS)",

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Polley, CM, Jovic, V, Su, TY, Saghir, M, Newby, D, Kowalski, BJ, Jakiela, R, Barcz, A, Guziewicz, M, Balasubramanian, T, Balakrishnan, G, Laverock, J & Smith, KE 2016, 'Observation of surface states on heavily indium-doped SnTe(111), a superconducting topological crystalline insulator', Physical Review B, vol. 93, no. 7, 075132. https://doi.org/10.1103/PhysRevB.93.075132

TY - JOUR

T1 - Observation of surface states on heavily indium-doped SnTe(111), a superconducting topological crystalline insulator

AU - Polley, C. M.

AU - Jovic, V.

AU - Su, T. Y.

AU - Saghir, M.

AU - Newby, D.

AU - Kowalski, B. J.

AU - Jakiela, R.

AU - Barcz, A.

AU - Guziewicz, M.

AU - Balasubramanian, T.

AU - Balakrishnan, G.

AU - Laverock, J.

AU - Smith, K. E.

PY - 2016/2/18

Y1 - 2016/2/18

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84960155238

U2 - 10.1103/PhysRevB.93.075132

DO - 10.1103/PhysRevB.93.075132

M3 - Article (Academic Journal)

AN - SCOPUS:84960155238

SN - 2469-9950

VL - 93

JO - Physical Review B

JF - Physical Review B

IS - 7

M1 - 075132

ER -

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

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