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@ARTICLE{Tsukamoto:875157,
author = {Tsukamoto, Shigeru and Caciuc, Vasile and Atodiresei,
Nicolae and Blügel, Stefan},
title = {{S}pin-polarized electron transmission through {B}-doped
graphene nanoribbons with {F}e functionalization: a
first-principles study},
journal = {New journal of physics},
volume = {22},
number = {6},
issn = {1367-2630},
address = {[London]},
publisher = {IOP73379},
reportid = {FZJ-2020-01847},
pages = {063022},
year = {2020},
abstract = {In this study, we investigate the electron transport
properties of a B-doped armchair graphene nanoribbon (AGNR)
suspended between graphene electrodes based on
first-principles calculations. Our calculations reveal that
one of the electron transmission channels of a pristine AGNR
junction is closed by the B-doping. We then proceed to
explore the effect of the B-doping on the spin-polarized
electron transport behavior of a Fe-functionalized AGNR
junction. As a result, transmission channels for
majority-spin electrons are closed and the spin polarization
of the electron transmission is enhanced from 0.60 for the
Fe-functionalized AGNR junction to 0.96 for the B- and
Fe-codoped one. This observation implies that the codoped
AGNR junction can be employed as a spin filter. In addition,
we investigate the electronic nature of the transmission
suppression caused by the B-doping. A detailed analysis of
the scattering wave functions clarifies that a mode
modulation of an incident wave arises in the B-doped AGNR
part and the incident wave connects to an evanescent wave in
the transmission-side electrode. For pristine and
Fe-functionalized AGNR junctions, such a mode modulation is
not observed and the incident wave connects to a propagating
wave in the transmission-side electrode. Tuning of electron
transport property by exploiting such a mode modulation is
one of promising techniques for designing functionality of
spintronics devices. We also discuss the general
correspondence between the electron transmission spectrum
and the density of states of a junction.},
cin = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
$I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
pnm = {142 - Controlling Spin-Based Phenomena (POF3-142) / 143 -
Controlling Configuration-Based Phenomena (POF3-143) /
Hybrid 2D-based interfaces from first principles
$(jias1e_20190501)$},
pid = {G:(DE-HGF)POF3-142 / G:(DE-HGF)POF3-143 /
$G:(DE-Juel1)jias1e_20190501$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000543093100001},
doi = {10.1088/1367-2630/ab8cac},
url = {https://juser.fz-juelich.de/record/875157},
}