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@ARTICLE{Rtten:634413,
author = {Rütten, Lisa M. and Schmid, Harald and van Weerdenburg,
Werner M. J. and Liebhaber, Eva and Rossnagel, Kai and
Franke, Katharina J.},
title = {{O}dd-parity ground state in dilute {Y}u-{S}hiba-{R}usinov
dimers and chains},
journal = {Physical review / B},
volume = {111},
number = {20},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {PUBDB-2025-02496},
pages = {205424},
year = {2025},
note = {We thank Felix von Oppen and Gal Lemut for
fruitfuldiscussions. We gratefully acknowledge financial
support bythe Deutsche Forschungsgemeinschaft (DFG, German
Re-search Foundation) through Projects No. 277101999
(CRC183, Project No. C03) and No. 328545488 (CRC 227,Project
No. B05). LMR acknowledges membership in theInternational
Max Planck Research School “Elementary Pro-cesses in
Physical Chemistry.”},
abstract = {Magnetic adatoms on superconductors induce Yu-Shiba-Rusinov
(YSR) states, which are key to the design of low-dimensional
correlated systems and topological superconductivity.
Competing magnetic interactions and superconducting pairing
lead to a rich phase diagram. Using a scanning tunneling
microscope (STM), we position Fe atoms on
2𝐻−NbSe$_2$to build a dimer with an odd-parity
ground state, i.e., a partially screened YSR channel with
the hybridized states spanning the Fermi level. This ground
state makes the dimer a promising precursor for a
topological YSR chain. By adding one atom at a time, we
track the formation of YSR bands. The lowest-energy band
crosses the Fermi level, and we find strong site-dependent
spectral variations especially at the chain's terminations.
We attribute these features to quantum spin effects and
ferromagnetic coupling influenced by the local chemical
environment.},
cin = {FS-SXQM},
ddc = {530},
cid = {I:(DE-H253)FS-SXQM-20190201},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / DFG project G:(GEPRIS)316546650 -
Hybride topologische Plattformen (C03) (316546650) / DFG
project G:(GEPRIS)328545488 - TRR 227: Ultraschnelle
Spindynamik (328545488) / DFG project G:(GEPRIS)277101999 -
TRR 183: Verschränkte Materiezustände (277101999) / DFG
project G:(GEPRIS)397935742 - Spindynamik in atomar
präzisen Nanostrukturen (B05) (397935742)},
pid = {G:(DE-HGF)POF4-632 / G:(GEPRIS)316546650 /
G:(GEPRIS)328545488 / G:(GEPRIS)277101999 /
G:(GEPRIS)397935742},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
doi = {10.1103/PhysRevB.111.205424},
url = {https://bib-pubdb1.desy.de/record/634413},
}