Lee, Shu-Ping and Michaeli, Karen and Alicea, Jason and Yacoby, Amir (2014) Revealing topological superconductivity in extended quantum spin Hall Josephson junctions. Physical Review Letters, 113 (19). Art. No. 197001. ISSN 0031-9007. doi:10.1103/PhysRevLett.113.197001. https://resolver.caltech.edu/CaltechAUTHORS:20140409-130620943
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Abstract
Quantum spin Hall–superconductor hybrids are promising sources of topological superconductivity and Majorana modes, particularly given recent progress on HgTe and InAs/GaSb. We propose a new method of revealing topological superconductivity in extended quantum spin Hall Josephson junctions supporting “fractional Josephson currents.” Specifically, we show that as one threads magnetic flux between the superconductors, the critical current traces an interference pattern featuring sharp fingerprints of topological superconductivity—even when noise spoils parity conservation.
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| Additional Information: | © 2014 American Physical Society. Received 21 March 2014; published 6 November 2014. We are indebted to D. Clarke, J. Meyer, J. Sau, A. Stern, D. van Harlingen, and especially B. Halperin, S. Hart, and H. Ren for enlightening discussions. We also acknowledge funding from the NSF through Grants No. DMR-1341822 (S.-P. L. and J. A.) and No. DMR-1206016 (A. Y.), the Alfred P. Sloan Foundation (J. A.), a grant from Microsoft Corporation (A. Y.), and the Caltech Institute for Quantum Information and Matter, an NSF Physics Frontiers Center, with support of the Gordon and Betty Moore Foundation. A. Y. is also supported by the STC Center for Integrated Quantum Materials, NSF Grant No. DMR-1231319. | ||||||||||||||||||||
| Group: | Institute for Quantum Information and Matter, Walter Burke Institute for Theoretical Physics | ||||||||||||||||||||
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| Issue or Number: | 19 | ||||||||||||||||||||
| Classification Code: | PACS: 74.45.+c, 74.50.+r | ||||||||||||||||||||
| DOI: | 10.1103/PhysRevLett.113.197001 | ||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20140409-130620943 | ||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140409-130620943 | ||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||
| ID Code: | 44827 | ||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||
| Deposited By: | INVALID USER | ||||||||||||||||||||
| Deposited On: | 09 Apr 2014 22:45 | ||||||||||||||||||||
| Last Modified: | 10 Nov 2021 16:56 |
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