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@ARTICLE{Dang:807088,
author = {Dang, Hung The and dos Santos Dias, Manuel and Liebsch,
Ansgar and Lounis, Samir},
title = {{S}trong correlation effects in theoretical {STM} studies
of magnetic adatoms},
journal = {Physical review / B},
volume = {93},
number = {11},
issn = {2469-9950},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2016-02116},
pages = {115123},
year = {2016},
abstract = {We present a theoretical study for the scanning tunneling
microscopy (STM) spectra of surface-supported magnetic
nanostructures, incorporating strong correlation effects. As
concrete examples, we study Co and Mn adatoms on the Cu(111)
surface, which are expected to represent the opposite limits
of Kondo physics and local moment behavior, using a
combination of density functional theory and both quantum
Monte Carlo and exact diagonalization impurity solvers. We
examine in detail the effects of temperature T, correlation
strength U, and impurity d electron occupancy Nd on the
local density of states. We also study the effective
coherence energy scale, i.e., the Kondo temperature TK,
which can be extracted from the STM spectra. Theoretical STM
spectra are computed as a function of STM tip position
relative to each adatom. Because of the multiorbital nature
of the adatoms, the STM spectra are shown to consist of a
complicated superposition of orbital contributions, with
different orbital symmetries, self-energies, and Kondo
temperatures. For a Mn adatom, which is close to
half-filling, the STM spectra are featureless near the Fermi
level. On the other hand, the quasiparticle peak for a Co
adatom gives rise to strongly position-dependent Fano line
shapes.},
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)},
pid = {G:(DE-HGF)POF3-142},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000372407200001},
doi = {10.1103/PhysRevB.93.115123},
url = {https://juser.fz-juelich.de/record/807088},
}