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@ARTICLE{Tilgner:1043689,
author = {Tilgner, Niclas and Wolff, Susanne and Soubatch, Serguei
and Lee, Tien-Lin and Peña Unigarro, Andres David and
Gemming, Sibylle and Tautz, F. Stefan and Seyller, Thomas
and Kumpf, Christian and Göhler, Fabian and Schädlich,
Philip},
title = {{R}eversible switching of the environment-protected quantum
spin {H}all insulator bismuthene at the graphene/{S}i{C}
interface},
journal = {Nature Communications},
volume = {16},
number = {1},
issn = {2041-1723},
address = {[London]},
publisher = {Springer Nature},
reportid = {FZJ-2025-02987},
pages = {6171},
year = {2025},
abstract = {Quantum spin Hall insulators have been extensively studied
both theoretically and experimentally because they exhibit
robust helical edge states driven by spin-orbit coupling and
offer the potential for applications in spintronics through
dissipationless spin transport. Here we show that a single
layer of elemental Bi, formed by intercalation of an
epitaxial graphene buffer layer on SiC(0001), is a promising
candidate for a quantum spin Hall insulator. This layer can
be reversibly switched between an electronically inactive
precursor state and a bismuthene state, the latter
exhibiting the predicted band structure of a true
two-dimensional bismuthene layer. Switching is accomplished
by hydrogenation (dehydrogenation) of the sample. A partial
passivation (activation) of Si dangling bonds causes a
lateral shift of Bi atoms involving a change of the
adsorption site. In the bismuthene state, the Bi honeycomb
layer is a prospective quantum spin Hall insulator,
inherently protected by the graphene sheet above and the
H-passivated substrate below.},
cin = {PGI-3},
ddc = {500},
cid = {I:(DE-Juel1)PGI-3-20110106},
pnm = {5213 - Quantum Nanoscience (POF4-521) / DFG project
G:(GEPRIS)449119662 - FOR 5242: Proximity induzierte
Korrelationseffekte in niedrigdimensionalen Strukturen
(449119662) / SFB 1083 A12 - Struktur und Anregungen von
hetero-epitaktischen Schichtsystemen aus schwach
wechselwirkenden 2D-Materialien und molekularen Schichten
(A12) (385975694)},
pid = {G:(DE-HGF)POF4-5213 / G:(GEPRIS)449119662 /
G:(GEPRIS)385975694},
typ = {PUB:(DE-HGF)16},
pubmed = {40615386},
UT = {WOS:001523057700029},
doi = {10.1038/s41467-025-60440-x},
url = {https://juser.fz-juelich.de/record/1043689},
}