DOI: 10.1073/pnas.1014085108. Pressure-induced superconductivity in topological parent compound Bi <sub>2</sub> Te <sub>3</sub>

Pressure-induced superconductivity in topological parent compound Bi 2 Te 3

10.1073/pnas.1014085108

Crossref journal-article

Proceedings of the National Academy of Sciences

Proceedings of the National Academy of Sciences (341)

Abstract

We report a successful observation of pressure-induced superconductivity in a topological compound Bi 2 Te 3 with T c of ∼3 K between 3 to 6 GPa. The combined high-pressure structure investigations with synchrotron radiation indicated that the superconductivity occurred at the ambient phase without crystal structure phase transition. The Hall effects measurements indicated the hole-type carrier in the pressure-induced superconducting Bi 2 Te 3 single crystal. Consequently, the first-principles calculations based on the structural data obtained by the Rietveld refinement of X-ray diffraction patterns at high pressure showed that the electronic structure under pressure remained topologically nontrivial. The results suggested that topological superconductivity can be realized in Bi 2 Te 3 due to the proximity effect between superconducting bulk states and Dirac-type surface states. We also discuss the possibility that the bulk state could be a topological superconductor.

Authors 18

J. L. Zhang (first)
S. J. Zhang (additional)
H. M. Weng (additional)
W. Zhang (additional)
L. X. Yang (additional)
Q. Q. Liu (additional)
S. M. Feng (additional)
X. C. Wang (additional)
R. C. Yu (additional)
L. Z. Cao (additional)
L. Wang (additional)
W. G. Yang (additional)
H. Z. Liu (additional)
W. Y. Zhao (additional)
S. C. Zhang (additional)
X. Dai (additional)
Z. Fang (additional)
C. Q. Jin (additional)

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Dates

Type	When
Created	14 years, 8 months ago (Dec. 20, 2010, 11:23 p.m.)
Deposited	3 years, 4 months ago (April 14, 2022, 9:11 a.m.)
Indexed	21 minutes ago (Aug. 23, 2025, 7:38 p.m.)
Issued	14 years, 8 months ago (Dec. 20, 2010)
Published	14 years, 8 months ago (Dec. 20, 2010)
Published Online	14 years, 8 months ago (Dec. 20, 2010)
Published Print	14 years, 7 months ago (Jan. 4, 2011)

Funders 0

None

BibTeX

@article{Zhang_2010, title={Pressure-induced superconductivity in topological parent compound Bi 2 Te 3}, volume={108}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.1014085108}, DOI={10.1073/pnas.1014085108}, number={1}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Zhang, J. L. and Zhang, S. J. and Weng, H. M. and Zhang, W. and Yang, L. X. and Liu, Q. Q. and Feng, S. M. and Wang, X. C. and Yu, R. C. and Cao, L. Z. and Wang, L. and Yang, W. G. and Liu, H. Z. and Zhao, W. Y. and Zhang, S. C. and Dai, X. and Fang, Z. and Jin, C. Q.}, year={2010}, month=dec, pages={24–28} }

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  "abstract": "<jats:p>\n            We report a successful observation of pressure-induced superconductivity in a topological compound Bi\n            <jats:sub>2</jats:sub>\n            Te\n            <jats:sub>3</jats:sub>\n            with\n            <jats:italic>T</jats:italic>\n            <jats:sub>\n              <jats:italic>c</jats:italic>\n            </jats:sub>\n            of \u223c3\u00a0K between 3 to 6\u00a0GPa. The combined high-pressure structure investigations with synchrotron radiation indicated that the superconductivity occurred at the ambient phase without crystal structure phase transition. The Hall effects measurements indicated the hole-type carrier in the pressure-induced superconducting Bi\n            <jats:sub>2</jats:sub>\n            Te\n            <jats:sub>3</jats:sub>\n            single crystal. Consequently, the first-principles calculations based on the structural data obtained by the Rietveld refinement of X-ray diffraction patterns at high pressure showed that the electronic structure under pressure remained topologically nontrivial. The results suggested that topological superconductivity can be realized in Bi\n            <jats:sub>2</jats:sub>\n            Te\n            <jats:sub>3</jats:sub>\n            due to the proximity effect between superconducting bulk states and Dirac-type surface states. We also discuss the possibility that the bulk state could be a topological superconductor.\n          </jats:p>",
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