Charge resistance in a Majorana RC circuit

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12 Scopus citations


We investigate the dynamical charge response in a "Majorana Coulomb box" realized by two Majorana bound states hosted at the ends of a mesoscopic topological superconductor. One side of the wire is coupled to a normal lead and low frequency gate voltage is applied to the system. There is no dc current; the system can be considered as an RC quantum circuit. We calculate the effective capacitance and charge relaxation resistance. The latter is in agreement with the Korringa-Shiba formula where, however, the charge relaxation resistance is equal to h/2e2. This value corresponds to the strong Coulomb blockade limit described by a resonant model formulated by Fu. We also performed direct calculations using the latter model and defined its parameters by direct comparison with our perturbation theory results.

Original languageEnglish
Article number241105
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number24
StatePublished - 12 Dec 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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