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@ARTICLE{Krivenkov:837710,
author = {Krivenkov, M. and Golias, E. and Marchenko, D. and
Sánchez-Barriga, J. and Bihlmayer, G. and Rader, O. and
Varykhalov, A.},
title = {{N}anostructural origin of giant {R}ashba effect in
intercalated graphene},
journal = {2D Materials},
volume = {4},
number = {3},
issn = {2053-1583},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2017-06570},
pages = {035010},
year = {2017},
abstract = {To enhance the spin–orbit interaction in graphene by a
proximity effect without compromising the
quasi-free-standing dispersion of the Dirac cones means
balancing the opposing demands for strong and weak
graphene–substrate interaction. So far, only the
intercalation of Au under graphene/Ni(1 1 1) has proven
successful, which was unexpected since graphene prefers a
large separation (~$3.3~{\mathring{\rm A}}$ ) from a Au
monolayer in equilibrium. Here, we investigate this system
and find the solution in a nanoscale effect. We reveal that
the Au largely intercalates as nanoclusters. Our density
functional theory calculations show that the graphene is
periodically stapled to the Ni substrate, and this
attraction presses graphene and Au nanoclusters together.
This, in turn, causes a Rashba effect of the giant magnitude
observed in experiment. Our findings show that
nanopatterning of the substrate can be efficiently used for
engineering of spin–orbit effects in graphene.},
cin = {PGI-1 / IAS-1 / JARA-FIT / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406 /
$I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
pnm = {522 - Controlling Spin-Based Phenomena (POF3-522)},
pid = {G:(DE-HGF)POF3-522},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000406018600001},
doi = {10.1088/2053-1583/aa7ad8},
url = {https://juser.fz-juelich.de/record/837710},
}