Coulomb blockade of Majorana fermion induced transport

Abstract

We study Coulomb charging effects for transport through a topologically nontrivial superconducting wire, where Majorana bound states are present at the interface to normal-conducting leads. We construct the general Keldysh functional integral representation, and provide detailed results for the nonlinear current-voltage relation under weak Coulomb blockade conditions.

10 pages, 3 figures; version to appear in Phys. Rev. B (one figure added, presentation improved)

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