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@ARTICLE{Decker:156053,
author = {Decker, R. and Bazarnik, M. and Atodiresei, N. and Caciuc,
V. and Blügel, S. and Wiesendanger, R.},
title = {{L}ocal tunnel magnetoresistance of an iron intercalated
graphene-based heterostructure},
journal = {Journal of physics / Condensed matter},
volume = {26},
number = {39},
issn = {1361-648X},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2014-04948},
pages = {394004},
year = {2014},
abstract = {The lateral variation of the tunnel magnetoresistance (TMR)
of a graphene-based vertical heterostructure is studied by
spin-polarized scanning tunneling microscopy (SP–STM)
using an Fe-coated probe tip. The well-defined
heterostructure is obtained by the intercalation of a
magnetic Fe monolayer at the graphene/Ir(1 1 1)
interface. Its structure is characterized by a moiré
pattern with a high corrugation. In contrast to the Fe /
Ir(1 1 1) surface, graphene/Fe / Ir(1 1 1) exhibits
ferromagnetic order with an out-of-plane easy magnetization
axis. At the nanometer scale, our experiments reveal that
the moiré pattern induces a lateral variation of the TMR,
which reaches $80\%.$ The measured TMR at valleys of the
moiré pattern is higher than at hills. We interpret this
modulation in terms of a different hybridization between
graphene and Fe at valleys and hills due to a different
graphene–Fe distance at these sites, which leads to a
different transmission of spin-polarized states},
cin = {IAS-1 / PGI-1},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106},
pnm = {422 - Spin-based and quantum information (POF2-422)},
pid = {G:(DE-HGF)POF2-422},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000343313400006},
doi = {10.1088/0953-8984/26/39/394004},
url = {https://juser.fz-juelich.de/record/156053},
}