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

Autor: Beenakker, C. W. J., Pikulin, D. I., Hyart, T., Schomerus, H., Dahlhaus, J. P.
Rok vydání: 2012
Předmět:
Zdroj: Phys. Rev. Lett. 110, 017003 (2013)
Druh dokumentu: Working Paper
DOI: 10.1103/PhysRevLett.110.017003
Popis: The helical edge state of a quantum spin-Hall insulator can carry a supercurrent in equilibrium between two superconducting electrodes (separation L, coherence length xi). We calculate the maximum (critical) current I_c that can flow without dissipation along a single edge, going beyond the short-junction restriction L<Comment: 11 pages, 3 figures. Appendix B on the scattering formula for the ground-state fermion parity contains material that is not in the published version
Databáze: arXiv