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NMR studies of 3D topological insulators over a large temperature range. / Antonenko, A. O. ; Charnaya, E. V. ; Marchenkov, V. V. ; Naumov, S. V. .

In: IOP Conference Series: Materials Science and Engineering, Vol. 525, No. 1, 012003, 2019.

Research output: Contribution to journal › Conference article

Harvard

Antonenko, AO, Charnaya, EV, Marchenkov, VV & Naumov, SV 2019, 'NMR studies of 3D topological insulators over a large temperature range', IOP Conference Series: Materials Science and Engineering, vol. 525, no. 1, 012003. https://doi.org/10.1088/1757-899X/525/1/012003

APA

Antonenko, A. O., Charnaya, E. V., Marchenkov, V. V., & Naumov, S. V. (2019). NMR studies of 3D topological insulators over a large temperature range. IOP Conference Series: Materials Science and Engineering, 525(1), [012003]. https://doi.org/10.1088/1757-899X/525/1/012003

Vancouver

Antonenko AO, Charnaya EV, Marchenkov VV, Naumov SV. NMR studies of 3D topological insulators over a large temperature range. IOP Conference Series: Materials Science and Engineering. 2019;525(1). 012003. https://doi.org/10.1088/1757-899X/525/1/012003

Author

Antonenko, A. O. ; Charnaya, E. V. ; Marchenkov, V. V. ; Naumov, S. V. . / NMR studies of 3D topological insulators over a large temperature range. In: IOP Conference Series: Materials Science and Engineering. 2019 ; Vol. 525, No. 1.

BibTeX

@article{c559dc21e6e04a51a634fd6669e7be86,
title = "NMR studies of 3D topological insulators over a large temperature range",
abstract = "Results of NMR measurements of the Bi2Te3 and Bi2Se3 3D topological insulators within the temperature range 11-293 K are presented. Two lines were demonstrated in the 125Te and 77Se spectra over the whole temperature range for single crystals in the c^B0 and c||B0 orientations as well as for Bi2Te3 and Bi2Se3 powders. The observed lines correlated to two non-equivalent positions of chalcogen atoms in the crystalline structure of investigated bismuth chalcogenides. The thermal activated character of charge carriers was found for the Bi2Te3 single crystal and powder. The activation energy was evaluated. It was shown for the Bi2Se3 powder that thermally activated charge carriers did not play the main role in conductivity. The nontrivial behaviour of the 125Te and 77Se NMR spectra for Bi2Te3 and Bi2Se3 single crystals in the orientation c||B0 was found at low temperatures which could not be explained by the orientation dependence of the line shapes and shifts in the topologically trivial semiconductors without structural phase transitions.",
keywords = "BI2TE3",
author = "Antonenko, {A. O.} and Charnaya, {E. V.} and Marchenkov, {V. V.} and Naumov, {S. V.}",
year = "2019",
doi = "10.1088/1757-899X/525/1/012003",
language = "English",
volume = "525",
journal = "IOP Conference Series: Materials Science and Engineering",
issn = "1757-8981",
publisher = "IOP Publishing Ltd.",
number = "1",
note = "Fourth interdisciplinary scientific forum with international participation {"}New materials and promising technologies{"} ; Conference date: 27-11-2018 Through 30-11-2018",

}

RIS

TY - JOUR

T1 - NMR studies of 3D topological insulators over a large temperature range

AU - Antonenko, A. O.

AU - Charnaya, E. V.

AU - Marchenkov, V. V.

AU - Naumov, S. V.

PY - 2019

Y1 - 2019

N2 - Results of NMR measurements of the Bi2Te3 and Bi2Se3 3D topological insulators within the temperature range 11-293 K are presented. Two lines were demonstrated in the 125Te and 77Se spectra over the whole temperature range for single crystals in the c^B0 and c||B0 orientations as well as for Bi2Te3 and Bi2Se3 powders. The observed lines correlated to two non-equivalent positions of chalcogen atoms in the crystalline structure of investigated bismuth chalcogenides. The thermal activated character of charge carriers was found for the Bi2Te3 single crystal and powder. The activation energy was evaluated. It was shown for the Bi2Se3 powder that thermally activated charge carriers did not play the main role in conductivity. The nontrivial behaviour of the 125Te and 77Se NMR spectra for Bi2Te3 and Bi2Se3 single crystals in the orientation c||B0 was found at low temperatures which could not be explained by the orientation dependence of the line shapes and shifts in the topologically trivial semiconductors without structural phase transitions.

AB - Results of NMR measurements of the Bi2Te3 and Bi2Se3 3D topological insulators within the temperature range 11-293 K are presented. Two lines were demonstrated in the 125Te and 77Se spectra over the whole temperature range for single crystals in the c^B0 and c||B0 orientations as well as for Bi2Te3 and Bi2Se3 powders. The observed lines correlated to two non-equivalent positions of chalcogen atoms in the crystalline structure of investigated bismuth chalcogenides. The thermal activated character of charge carriers was found for the Bi2Te3 single crystal and powder. The activation energy was evaluated. It was shown for the Bi2Se3 powder that thermally activated charge carriers did not play the main role in conductivity. The nontrivial behaviour of the 125Te and 77Se NMR spectra for Bi2Te3 and Bi2Se3 single crystals in the orientation c||B0 was found at low temperatures which could not be explained by the orientation dependence of the line shapes and shifts in the topologically trivial semiconductors without structural phase transitions.

KW - BI2TE3

UR - http://www.scopus.com/inward/record.url?scp=85067829108&partnerID=8YFLogxK

U2 - 10.1088/1757-899X/525/1/012003

DO - 10.1088/1757-899X/525/1/012003

M3 - Conference article

VL - 525

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

SN - 1757-8981

IS - 1

M1 - 012003

T2 - Fourth interdisciplinary scientific forum with international participation "New materials and promising technologies"

Y2 - 27 November 2018 through 30 November 2018

ER -

ID: 42946269