Transport through a Majorana island: strong tunneling regime

Abstract

In the presence of Rashba spin-orbit coupling, magnetic field can drive a proximitized nanowire into a topological superconducting phase. We study transport properties of such nanowires in the Coulomb blockade regime. 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.

6 pages, 1 figure

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Cited by in corpus (13)

• Realizing Majorana zero modes in superconductor-semiconductor heterostructures
• Universal Majorana thermoelectric noise
• Violation of the Wiedemann-Franz law in the Topological Kondo model
• Multichannel charge Kondo effect and non-Fermi liquid fixed points in conventional and topological superconductor islands
• Majorana differential shot noise and its universal thermoelectric crossover
• Signatures of the Majorana spin in electrical transport through a Majorana nanowire
• Transport properties of Majorana bound states networks in the Coulomb blockade regime
• Signatures of topological ground state degeneracy in Majorana islands
• Quantum Criticality in Resonant Andreev Conduction
• Nonequilibrium finite frequency resonances in differential quantum noise driven by Majorana interference
• Thermoelectric fluctuations of interfering Majorana bound states
• Sub-gap Fano resonances in a topological superconducting wire with on-site Coulomb interactions
• Fluctuation response of a minimal Kitaev chain in nonequilibrium states