Dresden 2014 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 101: Transport - Poster Session

TT 101.39: Poster

Donnerstag, 3. April 2014, 15:00–19:00, P2

Transport simulations of nanowires hosting Majorana Bound States — •Felix Weiner and Peter Schmitteckert — Institute of Nanotechnology, Karlsruhe Institute of Technology, D-76344 Eggenstein-Leopoldshafen, Germany

Semiconductor nanowires with proximity-induced s-wave superconductivity and spin-orbit coupling have been shown theoretically to host Majorana Bound States (MBS) on the boundaries of topological segments. The unambiguous identification of these states in experiments is still an ongoing challenge. Several groups have reported the observation of a zero-bias peak in the differential conductance of tunneling experiments, which hints at the existence of a MBS at the end of the wire. We investigate numerically the transport properties of inhomogenous nanowires by means of wavepacket evolution. The aim is to address open questions regarding the I-V characteristic such as the signature of the excitation gap, which is expected to close when passing through the topological phase transition.