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@ARTICLE{Burke:1021584,
author = {Burke, Declan and Heffels, Dennis and Moors, Kristof and
Schüffelgen, Peter and Grützmacher, Detlev and Connolly,
Malcolm R.},
title = {{R}obust {M}ajorana bound states in magnetic topological
insulator nanoribbons with fragile chiral edge channels},
journal = {Physical review / B},
volume = {109},
number = {4},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2024-00849},
pages = {045138},
year = {2024},
abstract = {Magnetic topological insulators in the quantum anomalous
Hall regime host ballistic chiral edge channels. When
proximitized by an s-wave superconductor, these edge states
offer the potential for realizing topological
superconductivity and Majorana bound states without the
detrimental effect of large externally applied magnetic
fields on superconductivity. Realizing well-separated
unpaired Majorana bound states requires magnetic topological
insulator ribbons with a width of the order of the
transverse extent of the edge state, however, which is
expected to bring the required ribbon width down to around
100nm. In this regime, it is known to be extremely difficult
to retain the ballistic nature of chiral edge channels and
realize a quantized Hall conductance. In this paper, we
study the impact of disorder in such magnetic topological
insulator nanoribbons and compare the fragility of ballistic
chiral edge channels with the stability of Majorana bound
states when the ribbon is covered by a superconducting film.
We find that the Majorana bound states exhibit greater
robustness against disorder than the underlying chiral edge
channels.},
cin = {PGI-9 / JARA-FIT},
ddc = {530},
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},
UT = {WOS:001173687700004},
doi = {10.1103/PhysRevB.109.045138},
url = {https://juser.fz-juelich.de/record/1021584},
}