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@ARTICLE{Brinker:910476,
author = {Brinker, Sascha and Küster, Felix and Parkin, Stuart S. P.
and Sessi, Paolo and Lounis, Samir},
title = {{A}nomalous excitations of atomically crafted quantum
magnets},
journal = {Science advances},
volume = {8},
number = {4},
issn = {2375-2548},
address = {Washington, DC [u.a.]},
publisher = {Assoc.},
reportid = {FZJ-2022-03859},
pages = {eabi7291},
year = {2022},
abstract = {High–energy resolution spectroscopic studies of quantum
magnets proved extremely valuable in accessing
magnetodynamics quantities, such as energy barriers,
magnetic interactions, and lifetime of excited states. Here,
we investigate a previously unexplored flavor of low-energy
spin excitations for quantum spins coupled to an electron
bath. In sharp contrast to the usual tunneling signature of
two steps symmetrically centered around the Fermi level, we
find a single step in the conductance. Combining
time-dependent and many-body perturbation theories, magnetic
field–dependent tunneling spectra are explained as the
result of an interplay between weak magnetic anisotropy
energy, magnetic interactions, and Stoner-like electron-hole
excitations that are strongly dependent on the magnetic
states of the nanostructures. The results are rationalized
in terms of a noncollinear magnetic ground state and the
dominance of ferro- and antiferromagnetic interactions. The
atomically crafted nanomagnets offer an appealing model for
the exploration of electrically pumped spin systems.},
cin = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
ddc = {500},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
$I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
pnm = {5211 - Topological Matter (POF4-521)},
pid = {G:(DE-HGF)POF4-5211},
typ = {PUB:(DE-HGF)16},
pubmed = {35080983},
UT = {WOS:000747329300005},
doi = {10.1126/sciadv.abi7291},
url = {https://juser.fz-juelich.de/record/910476},
}