Proximity-effect-induced superconducting phase in the topological insulator Bi[subscript 2]Se[subscript 3]
Name
Yang-2012-Proximity-effect-induced superconducting phase.pdf
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1.53 MB
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Author(s)
Yang, Fan
Qu, Fanming
Shen, Jie
Ding, Yue
Chen, Jun
Ji, Zhongqing
Liu, Guangtong
Fan, Jie
Yang, Changli
Fu, Liang
Date Issued
October 2012
Journal
Physical Review B
Publisher
American Physical Society
Citation
Yang, Fan et al. “Proximity-effect-induced superconducting phase in the topological insulator Bi[subscript 2]Se[subscript 3].” Physical Review B 86.13 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We have studied the electron transport properties of topological insulator-related material Bi[subscript 2]Se[subscript 3] near the superconducting Pb-Bi[subscript 2]Se[subscript 3] interface, and found that a superconducting state is induced over an extended volume in Bi[subscript 2]Se[subscript 3]. This state can carry a Josephson supercurrent, and demonstrates a gaplike structure in the conductance spectra as probed by a normal-metal electrode. The establishment of the gap is not by confining the electrons into a narrow space close to the superconductor-normal metal interface, as previously observed in other systems, but presumably via electron-electron attractive interaction in Bi[subscript 2]Se[subscript 3].
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.86.134504
