Regensburg 2019 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 11: Majorana Physics

TT 11.5: Vortrag

Montag, 1. April 2019, 16:15–16:30, H4

Transport properties of nanowire networks hosting Majorana bound states in presence of Coulomb energy — •Johan Ekström¹, Patrik Recher², and Thomas Schmidt¹ — ¹Physics and Materials Science Research Unit, University of Luxembourg, 1511 Luxembourg, Luxembourg — ²Institut für Mathematische Physik, Technische Universität Braunschweig, D-38106 Braunschweig, Germany

We investigate the electron transport through Coulomb blockaded structures hosting Majorana bound states (MBS). In particular we are interested in higher-order processes beyond local and crossed Andreev reflection. A nanowire in the topologically non-trivial regime hosts a pair of MBSs, one localized on each end of the wire. In more complex wire structures, for example wire junctions, MBSs can manifest themselves at the edges as well as at crossing points. This gives rise to transport processes that are not observed in simple nanowires. We present a general way of how the different transport processes can be obtained and understood by using a master equation where the tunneling Hamiltonian is taken into account perturbatively.