Title:
Enhanced Zero-Bias Majorana Peak in the Differential Tunneling Conductance of
Disordered Multisubband Quantum-Wire/Superconductor Junctions
Author(s):
Pientka, Falko; Kells, Graham; Romito, Alessandro; Brouwer, Piet W.; Oppen, Felix von
Year of publication:
2012
Available Date:
2014-02-21T07:08:11.749Z
Abstract:
A recent experiment Mourik et al. [Science 336, 1003 (2012)] on InSb quantum
wires provides possible evidence for the realization of a topological
superconducting phase and the formation of Majorana bound states. Motivated by
this experiment, we consider the signature of Majorana bound states in the
differential tunneling conductance of multisubband wires. We show that the
weight of the Majorana-induced zero-bias peak is strongly enhanced by mixing
of subbands, when disorder is added to the end of the quantum wire. We also
consider how the topological phase transition is reflected in the gap
structure of the current-voltage characteristic.
Part of Identifier:
ISSN (print): 0031-9007
DDC-Classification:
530 Physik
Publication Type:
Wissenschaftlicher Artikel
Also published in:
Physical Review Letters. - 109 (2012), 22, Artikel Nr. 227006/1-5
URL of the Original Publication:
DOI of the Original Publication:
Department/institution:
Physik
Institut für Theoretische Physik
Comments:
Der Artikel wurde in einer Open-Access-Zeitschrift publiziert.