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arXiv · 1403.2747

Revealing topological superconductivity in extended quantum spin Hall Josephson junctions

Shu-Ping Lee·Karen Michaeli·Jason Alicea·Amir Yacoby
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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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Shu-Ping Lee, Karen Michaeli, Jason Alicea, Amir Yacoby. 2014-11-07. Revealing topological superconductivity in extended quantum spin Hall Josephson junctions. https://doi.org/10.1103/physrevlett.113.197001

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