Description
Motivated by recent experiments, we consider a mesoscopic
island consisting of a proximitized nanowire which is
connected via point contacts to normal-state leads. We study
transport properties of such islands in the Coulomb blockade
regime as a function of an applied magnetic field. In the
presence of Rashba spin-orbit coupling, magnetic field can
drive a proximitized nanowire into a topological
superconducting phase. The associated with the topological
superconductivity Majorana modes significantly modify
transport and lead to single-electron coherent transmission
through the nanowire - a non-local signature of topological
superconductivity. In this work, we focus on the case of
strong hybridization of the Majorana modes with the normal
leads. The induced by hybridization broadening of the
Majorana zero-energy states competes with the charging
energy, leading to a considerable modification of the Coulomb
blockade in a nanowire contacted by two normal leads. We
evaluate the two-terminal conductance as a function of the
gate voltage, junctions transmission coefficients, the
geometric capacitance of and the induced superconducting
gap in the nanowire.
