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@ARTICLE{Costi:3474,
author = {Costi, T. A. and Bergqvist, L. and Weichselbaum, A. and von
Delft, J. and Micklitz, T and Rosch, A. and Mavropoulos, Ph.
and Dederichs, P. H. and Mallet, F. and Saminadayar, L. and
Bäuerle, C},
title = {{K}ondo {D}ecoherence: finding the right spin model for
iron impurities in gold and silver},
journal = {Physical review letters},
volume = {102},
issn = {0031-9007},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-3474},
pages = {056802},
year = {2009},
note = {L. B. acknowledges support from the EU within the Marie
Curie Actions for Human Resources and Mobility; P. M. from
the ESF program SONS, Contract No. ERAS-CT2003-980409; T. M.
from the U. S. Department of Energy, Office of Science,
Contract No. DE-AC0206CH11357; L. S. and C. B. acknowledge
technical support from the Quantronics group, Saclay, and A.
D. Wieck and financial support from ANR PNANO
"QuSPIN.''Support from the John von Neumann Institute for
Computing (Julich), the DFG (SFB 608, SFB-TR12, and
De730/3-2) and from the Cluster of Excellence Nanosystems
Initiative Munich is gratefully acknowledged.},
abstract = {We exploit the decoherence of electrons due to magnetic
impurities, studied via weak localization, to resolve a
long-standing question concerning the classic Kondo systems
of Fe impurities in the noble metals gold and silver: which
Kondo-type model yields a realistic description of the
relevant multiple bands, spin, and orbital degrees of
freedom? Previous studies suggest a fully screened spin S
Kondo model, but the value of S remained ambiguous. We
perform density functional theory calculations that suggest
S = 3/2. We also compare previous and new measurements of
both the resistivity and decoherence rate in
quasi-one-dimensional wires to numerical renormalization
group predictions for S = 1/2, 1, and 3/2, finding excellent
agreement for S = 3/2.},
keywords = {J (WoSType)},
cin = {IAS-1 / IAS-3 / IFF-1 / IFF-3 / JARA-FIT / JARA-HPC},
ddc = {550},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)IAS-3-20090406 /
I:(DE-Juel1)VDB781 / I:(DE-Juel1)VDB783 /
$I:(DE-82)080009_20140620$},
pnm = {Kondensierte Materie / Non-equilibrium dynamics of
fermionic atoms in optical lattices; transport at oxide
interfaces $(jiff23_20090701)$},
pid = {G:(DE-Juel1)FUEK414},
shelfmark = {Physics, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000263166400047},
doi = {10.1103/PhysRevLett.102.056802},
url = {https://juser.fz-juelich.de/record/3474},
}