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@ARTICLE{Heffels:999176,
author = {Heffels, Dennis and Burke, Declan and Connolly, Malcolm R.
and Schüffelgen, Peter and Grützmacher, Detlev and Moors,
Kristof},
title = {{R}obust and {F}ragile {M}ajorana {B}ound {S}tates in
{P}roximitized {T}opological {I}nsulator {N}anoribbons},
journal = {Nanomaterials},
volume = {13},
number = {4},
issn = {2079-4991},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2023-01210},
pages = {723 -},
year = {2023},
abstract = {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.},
cin = {PGI-9 / JARA-FIT},
ddc = {540},
cid = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$},
pnm = {5222 - Exploratory Qubits (POF4-522)},
pid = {G:(DE-HGF)POF4-5222},
typ = {PUB:(DE-HGF)16},
pubmed = {36839091},
UT = {WOS:000940576300001},
doi = {10.3390/nano13040723},
url = {https://juser.fz-juelich.de/record/999176},
}