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@ARTICLE{Bouaziz:851652,
author = {Bouaziz, Juba and dos Santos Dias, Manuel and
Ibañez-Azpiroz, Julen and Lounis, Samir},
title = {{A}b initio investigation of impurity-induced in-gap states
in {B}i 2 {T}e 3 and {B}i 2 {S}e 3},
journal = {Physical review / B},
volume = {98},
number = {3},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2018-05202},
pages = {035119},
year = {2018},
abstract = {We investigate in-gap states emerging when a single 3d
transition metal impurity is embedded in topological
insulators (Bi2Te3 and Bi2Se3). We use a combined approach
relying on first-principles calculations and an Anderson
impurity model. By computing the local density of states of
Cr, Mn, Fe, and Co embedded not only in surfaces of Bi2Te3
and of Bi2Se3 but also in their bulk phases, we demonstrate
that in-gap states originate from the hybridization of the
electronic states of the impurity with bulk bands and not
with the topological surface states as is usually assumed.
This finding is analyzed using a simplified Anderson
impurity model. These observations are in contradiction with
the prevailing models used to investigate the magnetic
doping of topological insulators [R. R. Biswas et al., Phys.
Rev. B 81, 233405 (2010)], which attribute the origin of the
in-gap states to the hybridization with the topological
surface states.},
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) /
First-principles investigation of single magnetic
nano-skyrmions $(jara0189_20180501)$ / First-principles
investigation of single magnetic nano-skyrmions
$(jias17_20150501)$},
pid = {G:(DE-HGF)POF3-142 / $G:(DE-Juel1)jara0189_20180501$ /
$G:(DE-Juel1)jias17_20150501$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000438674700003},
doi = {10.1103/PhysRevB.98.035119},
url = {https://juser.fz-juelich.de/record/851652},
}