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- W1486440769 abstract "We study fractional Josephson effect in a particle-number conserving system consisting of a quasi-one-dimensional superconductor coupled to a nanowire or an edge carrying $e/m$ fractional charge excitations with $m$ being an odd integer. We show that, due to the topological ground-state degeneracy in the system, the periodicity of the supercurrent on magnetic flux through the superconducting loop is non-trivial which provides a possibility to detect topological phases of matter by the $dc$ supercurrent measurement. Using a microscopic model for the nanowire and quasi-one-dimensional superconductor, we derived an effective low-energy theory for the system which takes into account effects of quantum phase fluctuations. We discuss the stability of the fractional Josephson effect with respect to the quantum phase slips in a mesoscopic superconducting ring with a finite charging energy." @default.
- W1486440769 created "2016-06-24" @default.
- W1486440769 creator A5034489451 @default.
- W1486440769 creator A5034971718 @default.
- W1486440769 date "2015-10-20" @default.
- W1486440769 modified "2023-10-16" @default.
- W1486440769 title "Fractional Josephson effect in number-conserving systems" @default.
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- W1486440769 doi "https://doi.org/10.1103/physrevb.92.134516" @default.
- W1486440769 hasPublicationYear "2015" @default.
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