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Topological Quantum Computing Quantum Chemistry Superconducting Qubits

Pressure induced Superconductivity in Topological Compound Bi2Te3

arXiv

Authors: J. L. Zhang, S. J. Zhang, H. M. Weng, W. Zhang, L. X. Yang, Q. Q. Liu, S. M. Feng, X. C. Wang, R. C. Yu, L. Z. Cao, L. Wang, W. G. Yang, H. Z. Liu, W. Y. Zhao, S. C. Zhang, X. Dai, Z. Fang, C. Q. Jin

Year

2010

Paper ID

11212

Status

Preprint

Abstract Read

~2 min

Abstract Words

112

Citations

N/A

Abstract

Bi2Te3 compound has been theoretically predicted (1) to be a topological insulator, and its topologically non-trivial surface state with a single Dirac cone has been observed in photoemission experiments (2). Here we report that superconductivity Tc^ 3K can be induced in Bi2Te3 as-grown single crystal (with hole-carriers) via pressure. The first-principles calculations show that the electronic structure under pressure remains to be topologically nontrivial, and the Dirac-type surface states can be well distinguished from bulk states at corresponding Fermi level. The proximity effect between superconducting bulk states and Dirac-type surface state could generate Majorana fermions on the surface. We also discuss the possibility that the bulk state could be a topological superconductor.

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This paper contributes to the Quantum Chemistry research area in the Quantum Articles archive.
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Bi2Te3 compound has been theoretically predicted (1) to be a topological insulator, and its topologically non-trivial surface state with a single Dirac cone has been observed...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1009.3691 [2] arXiv https://arxiv.org/abs/1009.3691 [3] Publisher https://arxiv.org/abs/1009.3691

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