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Title: Structural stability and phase transition of Bi 2 Te 3 under high pressure and low temperature

Abstract

Structural stability and phase transition of topological insulator Bi2Te3 were studied via angle-dispersive synchrotron radiation X-ray diffraction under high pressure and low temperature condition. The results manifest that the R-3m phase (phase I) is stable at 8 K over the pressure range up to 10 GPa and phase transition occurs between 8 K and 45 K at 8 GPa. According to the Birch-Murnaghan equation of state, the bulk modulus at ambient pressure B0 was estimated to be 45 ± 3 GPa with the assumption of B0' = 4. The structural robustness of phase I at 8 K suggests that the superconductivity below 10 GPa is related to phase I. Topological properties of superconducting Bi2Te3 phase under pressure were discussed.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCESDOE-NNSAFOREIGN
OSTI Identifier:
1372923
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physica. B, Condensed Matter; Journal Volume: 521; Journal Issue: C
Country of Publication:
United States
Language:
ENGLISH
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; High pressure; Low temperature; Phase transition; X-ray diffraction; Topological superconductivity

Citation Formats

Zhang, J. L., Zhang, S. J., Zhu, J. L., Liu, Q. Q., Wang, X. C., Jin, C. Q., and Yu, J. C. Structural stability and phase transition of Bi 2 Te 3 under high pressure and low temperature. United States: N. p., 2017. Web. doi:10.1016/j.physb.2017.06.042.
Zhang, J. L., Zhang, S. J., Zhu, J. L., Liu, Q. Q., Wang, X. C., Jin, C. Q., & Yu, J. C. Structural stability and phase transition of Bi 2 Te 3 under high pressure and low temperature. United States. doi:10.1016/j.physb.2017.06.042.
Zhang, J. L., Zhang, S. J., Zhu, J. L., Liu, Q. Q., Wang, X. C., Jin, C. Q., and Yu, J. C. Fri . "Structural stability and phase transition of Bi 2 Te 3 under high pressure and low temperature". United States. doi:10.1016/j.physb.2017.06.042.
@article{osti_1372923,
title = {Structural stability and phase transition of Bi 2 Te 3 under high pressure and low temperature},
author = {Zhang, J. L. and Zhang, S. J. and Zhu, J. L. and Liu, Q. Q. and Wang, X. C. and Jin, C. Q. and Yu, J. C.},
abstractNote = {Structural stability and phase transition of topological insulator Bi2Te3 were studied via angle-dispersive synchrotron radiation X-ray diffraction under high pressure and low temperature condition. The results manifest that the R-3m phase (phase I) is stable at 8 K over the pressure range up to 10 GPa and phase transition occurs between 8 K and 45 K at 8 GPa. According to the Birch-Murnaghan equation of state, the bulk modulus at ambient pressure B0 was estimated to be 45 ± 3 GPa with the assumption of B0' = 4. The structural robustness of phase I at 8 K suggests that the superconductivity below 10 GPa is related to phase I. Topological properties of superconducting Bi2Te3 phase under pressure were discussed.},
doi = {10.1016/j.physb.2017.06.042},
journal = {Physica. B, Condensed Matter},
number = C,
volume = 521,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 2017},
month = {Fri Sep 01 00:00:00 EDT 2017}
}