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Transport spectroscopy ofNSnanowire junctions with Majorana fermions

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Prada, Elsa, San-Jose, Pablo, Aguado, Ramón·2012·Physical Review B

Abstract

We investigate transport through normal-superconductor nanowire junctions in the presence of spin-orbit coupling and magnetic field. As the Zeeman field crosses the critical bulk value ${B}_{c}$ of the topological transition, a Majorana bound state (MBS) is formed, giving rise to a sharp zero-bias anomaly (ZBA) in the tunneling differential conductance. We identify novel features beyond this picture in wires with inhomogeneous depletion, such as the appearance of two MBSs inside a long depleted region for $B<{B}_{c}$. The resulting ZBA is in most cases weakly split and may coexist with Andreev bound states near zero energy. The ZBA may appear without evidence of a topological gap closing. This latter aspect is more evident in the multiband case and stems from a smooth pinch-off barrier. Most of these features are in qualitative agreement with recent experiments [V. Mourik et al., Science 336, 1003 (2012)]. We also discuss the rich phenomenology of the problem in other regimes which remain experimentally unexplored.

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Metadata

Authors
Prada, E., San-Jose, P., & Aguado, R.
Venue
Physical Review B
Published
2012-11-12
Volume
86
Issue
18
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
OpenAlex
W1516186574
Cited by
372
References
28
FWCI
9.64
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Transport spectroscopy ofNSnanowire junctions with Majorana fermions. https://app.cochat.ai/papers/10.1103/physrevb.86.180503
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Prada, E., San-Jose, P., & Aguado, R. (2012). Transport spectroscopy ofNSnanowire junctions with Majorana fermions. Physical Review B. https://doi.org/10.1103/physrevb.86.180503

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