title: Majorana single-charge transistor.
abstract: We study transport through a Coulomb blockaded topologically nontrivial superconducting wire (with Majorana end states) contacted by metallic leads. An exact formula for the current through this interacting Majorana single-charge transistor is derived in terms of wire spectral functions. A comprehensive picture follows from three different approaches. We find Coulomb oscillations with universal halving of the finite-temperature peak conductance under strong blockade conditions, where the valley conductance mainly comes from elastic cotunneling. The nonlinear conductance exhibits finite-voltage sidebands due to anomalous tunneling involving Cooper pair splitting.
authors.affiliation: Institut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Hützen
authors.forename: A
authors.initials: A
authors.lastname: Zazunov
authors.forename: B
authors.initials: B
authors.lastname: Braunecker
authors.forename: A Levy
authors.initials: AL
authors.lastname: Yeyati
authors.forename: R
authors.initials: R
authors.lastname: Egger