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

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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.

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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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

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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",

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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 - http://www.scopus.com/inward/record.url?scp=84960155238&partnerID=8YFLogxK

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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