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@ARTICLE{Friedrich:1018238,
author = {Friedrich, Felix and Odobesko, Artem and Bouaziz, Juba and
Lounis, Samir and Bode, Matthias},
title = {{E}vidence for spinarons in {C}o adatoms},
journal = {Nature physics},
volume = {20},
issn = {1745-2473},
address = {Basingstoke},
publisher = {Nature Publishing Group},
reportid = {FZJ-2023-04634},
pages = {28-33},
year = {2024},
abstract = {Cobalt atoms on the (111) surfaces of noble metals are
considered to be prototypical systems for the Kondo effect
in scanning tunnelling microscopy experiments. Recent
first-principles calculations, however, suggest that the
experimentally observed spectroscopic zero-bias anomaly can
be interpreted in terms of excitations of the spin of the Co
atom and the formation of a novel many-body state, namely,
the spinaron, rather than from a Kondo resonance. The
spinaron is a magnetic polaron that results from the
interaction of spin excitations with conduction electrons.
However, the experimental confirmation for the existence of
spinarons remains elusive. Here we present experimental
evidence for spinaronic states in Co atoms on the Cu(111)
surface. Our spin-averaged and spin-polarized scanning
tunnelling spectroscopy measurements in high magnetic fields
allow us to discriminate between the different existing
theoretical models and to invalidate the prevailing
Kondo-based interpretation of the zero-bias anomaly. Our
extended ab initio calculations instead suggest the presence
of multiple spinaronic states. Thus, our work provides the
foundation to explore the characteristics and consequences
of these intriguing hybrid many-body states as well as their
design in artificial nanostructures.},
cin = {PGI-1 / IAS-1},
ddc = {530},
cid = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406},
pnm = {5211 - Topological Matter (POF4-521) / 3D MAGiC -
Three-dimensional magnetization textures: Discovery and
control on the nanoscale (856538)},
pid = {G:(DE-HGF)POF4-5211 / G:(EU-Grant)856538},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001087870100001},
doi = {10.1038/s41567-023-02262-6},
url = {https://juser.fz-juelich.de/record/1018238},
}