Quantum resistor-capacitor circuit with majorana fermion modes in a chiral topological superconductor

Minchul Lee, Mahn-Soo Choi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We investigate the mesoscopic resistor-capacitor circuit consisting of a quantum dot coupled to spatially separated Majorana fermion modes in a chiral topological superconductor. We find substantially enhanced relaxation resistance due to the nature of Majorana fermions, which are their own antiparticles and are composed of particle and hole excitations in the same abundance. Further, if only a single Majorana mode is involved, the zero-frequency relaxation resistance is completely suppressed due to a destructive interference. As a result, the Majorana mode opens an exotic dissipative channel on a superconductor which is typically regarded as dissipationless due to its finite superconducting gap.

Original languageEnglish
Article number076801
JournalPhysical Review Letters
Volume113
Issue number7
DOIs
Publication statusPublished - 2014 Aug 13

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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