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@ARTICLE{Esat:1014722,
author = {Esat, Taner and Ternes, Markus and Temirov, Ruslan and
Tautz, F. Stefan},
title = {{E}lectron spin secluded inside a bottom-up assembled
standing metal-molecule nanostructure},
journal = {Physical review research},
volume = {5},
number = {3},
issn = {2643-1564},
address = {College Park, MD},
publisher = {APS},
reportid = {FZJ-2023-03412},
pages = {033200},
year = {2023},
abstract = {Artificial nanostructures, fabricated by placing atoms or
molecules as building blocks in well-defined positions, are
a powerful platform in which quantum effects can be studied
and exploited. In particular, they offer the opportunity to
reduce the electronic interaction between large aromatic
molecules and the underlying metallic substrate, if the
manipulation capabilities of scanning tunneling microscopy
to lift the molecule into an upright geometry on a pedestal
of two metal atoms are used. Here, we report a strategy to
study this interaction by investigating the Kondo effect.
Measurements at millikelvin temperatures and in magnetic
fields reveal that this bottom-up assembled standing
metal-molecule nanostructure has an S=1/2 spin which is
screened by substrate electrons, resulting in a Kondo
temperature of only 291±13 mK. We extract its Landé g
factor and its exchange coupling Jρ to the substrate, using
a third-order perturbation theory in the weak-coupling and
high-field regimes. We also show that the interaction
between the scanning tunneling microscope tip and the
molecule can tune the exchange coupling.},
cin = {PGI-3},
ddc = {530},
cid = {I:(DE-Juel1)PGI-3-20110106},
pnm = {5213 - Quantum Nanoscience (POF4-521)},
pid = {G:(DE-HGF)POF4-5213},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001123024300001},
doi = {10.1103/PhysRevResearch.5.033200},
url = {https://juser.fz-juelich.de/record/1014722},
}