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@ARTICLE{Schendel:862195,
      author       = {Schendel, V. and Barreteau, C. and Brandbyge, M. and Borca,
                      B. and Pentegov, I. and Schlickum, U. and Ternes, M. and
                      Wahl, P. and Kern, K},
      title        = {{S}trong paramagnon scattering in single atom {P}d
                      contacts},
      journal      = {Physical review / B},
      volume       = {96},
      number       = {3},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2019-02543},
      pages        = {035155},
      year         = {2017},
      abstract     = {Among all transition metals, palladium (Pd) has the highest
                      density of states at the Fermi energy at low temperatures
                      yet does not fulfill the Stoner criterion for
                      ferromagnetism. However, close proximity to magnetism
                      renders it a nearly ferromagnetic metal, which hosts
                      paramagnons, strongly damped spin fluctuations. Here we
                      compare the total and the differential conductance of
                      monoatomic contacts consisting of single Pd and cobalt (Co)
                      atoms between Pd electrodes. Transport measurements reveal a
                      conductance for Co of 1G0, while for Pd we obtain 2G0. The
                      differential conductance of monoatomic Pd contacts shows a
                      reduction with increasing bias, which gives rise to a
                      peculiar Λ-shaped spectrum. Supported by theoretical
                      calculations, we correlate this finding with the lifetime of
                      hot quasiparticles in Pd, which is strongly influenced by
                      paramagnon scattering. In contrast to this, Co adatoms
                      locally induce magnetic order, and transport through single
                      cobalt atoms remains unaffected by paramagnon scattering,
                      consistent with theory.},
      cin          = {PGI-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-3-20110106},
      pnm          = {142 - Controlling Spin-Based Phenomena (POF3-142)},
      pid          = {G:(DE-HGF)POF3-142},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000406631500003},
      doi          = {10.1103/PhysRevB.96.035155},
      url          = {https://juser.fz-juelich.de/record/862195},
}