In this section
@article{Heffels:2023:10.3390/nano13040723,
author = {Heffels, D and Burke, D and Connolly, MRR and Schueffelgen, P and Gruetzmacher, D and Moors, K},
doi = {10.3390/nano13040723},
journal = {Nanomaterials},
title = {Robust and fragile Majorana bound states in proximitized topological insulator nanoribbons},
url = {http://dx.doi.org/10.3390/nano13040723},
volume = {13},
year = {2023}
}
TY - JOUR
AB - Topological insulator (TI) nanoribbons with proximity-induced superconductivity are a promising platform for Majorana bound states (MBSs). In this work, we consider a detailed modeling approach for a TI nanoribbon in contact with a superconductor via its top surface, which induces a superconducting gap in its surface-state spectrum. The system displays a rich phase diagram with different numbers of end-localized MBSs as a function of chemical potential and magnetic flux piercing the cross section of the ribbon. These MBSs can be robust or fragile upon consideration of electrostatic disorder. We simulate a tunneling spectroscopy setup to probe the different topological phases of top-proximitized TI nanoribbons. Our simulation results indicate that a top-proximitized TI nanoribbon is ideally suited for realizing fully gapped topological superconductivity, in particular when the Fermi level is pinned near the Dirac point. In this regime, the setup yields a single pair of MBSs, well separated at opposite ends of the proximitized ribbon, which gives rise to a robust quantized zero-bias conductance peak.
AU - Heffels,D
AU - Burke,D
AU - Connolly,MRR
AU - Schueffelgen,P
AU - Gruetzmacher,D
AU - Moors,K
DO - 10.3390/nano13040723
PY - 2023///
SN - 2079-4991
TI - Robust and fragile Majorana bound states in proximitized topological insulator nanoribbons
T2 - Nanomaterials
UR - http://dx.doi.org/10.3390/nano13040723
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000940576300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR - https://www.mdpi.com/2079-4991/13/4/723
UR - http://hdl.handle.net/10044/1/109475
VL - 13
ER -