Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect

Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect

The helical edge state of a quantum spin-Hall insulator can carry a supercurrent in equilibrium between two superconducting electrodes (separation L, coherence length ξ). We calculate the maximum (critical) current I(c) that can flow without dissipation along a single edge, going beyond the short-ju...

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Veröffentlicht in:Physical review letters 2013-01, Vol.110 (1), p.017003-017003, Article 017003
Hauptverfasser: Beenakker, C W J, Pikulin, D I, Hyart, T, Schomerus, H, Dahlhaus, J P
Format: Artikel
Sprache:eng
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Zusammenfassung:The helical edge state of a quantum spin-Hall insulator can carry a supercurrent in equilibrium between two superconducting electrodes (separation L, coherence length ξ). We calculate the maximum (critical) current I(c) that can flow without dissipation along a single edge, going beyond the short-junction restriction L
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.110.017003