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@ARTICLE{Rtten:641978,
      author       = {Rütten, Lisa M. and Liebhaber, Eva and Reecht, Gaël and
                      Rossnagel, Kai and Franke, Katharina J.},
      title        = {{D}irect signatures of d-level hybridization and
                      dimerization in magnetic adatom chains on a superconductor},
      journal      = {Nanoscale},
      volume       = {17},
      number       = {46},
      issn         = {2040-3364},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {PUBDB-2025-05265},
      pages        = {26811 - 26819},
      year         = {2025},
      note         = {cc-by},
      abstract     = {Magnetic adatom chains on superconductors provide a
                      platform to explore correlated spin states and emergent
                      quantum phases. Using low-temperature scanning tunneling
                      spectroscopy, we study the distance-dependent interaction
                      between Fe atoms on 2H-NbSe2. While single atoms exhibit
                      four Yu–Shiba–Rusinov states and partially occupied d
                      levels consistent with a S = 2 spin state, the spin is
                      quenched when two Fe atoms reside in nearest-neighbor
                      lattice sites, where the d levels of the atoms hybridize.
                      The non-magnetic dimer configuration is stable in that
                      dimerization persists in chains with weak interactions among
                      the dimers. Thus, the spin-state quenching has important
                      implications also for Fe chains. While even-numbered chains
                      are stable and non-magnetic, odd-numbered chains host a
                      single magnetic atom at one of the chain's ends, with its
                      position being switchable by voltage pulses. Our findings
                      emphasize the role of interatomic coupling in shaping
                      quantum ground states.},
      cin          = {FS-SXQM},
      ddc          = {600},
      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)397935742 - Spindynamik in atomar
                      präzisen Nanostrukturen (B05) (397935742)},
      pid          = {G:(DE-HGF)POF4-632 / G:(GEPRIS)316546650 /
                      G:(GEPRIS)397935742},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1039/D5NR03194J},
      url          = {https://bib-pubdb1.desy.de/record/641978},
}