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@ARTICLE{Schneider:884855,
      author       = {Schneider, Lucas and Brinker, Sascha and Steinbrecher,
                      Manuel and Hermenau, Jan and Posske, Thore and dos Santos
                      Dias, Manuel and Lounis, Samir and Wiesendanger, Roland and
                      Wiebe, Jens},
      title        = {{C}ontrolling in-gap end states by linking nonmagnetic
                      atoms and artificially-constructed spin chains on
                      superconductors},
      journal      = {Nature Communications},
      volume       = {11},
      number       = {1},
      issn         = {2041-1723},
      address      = {[London]},
      publisher    = {Nature Publishing Group UK},
      reportid     = {FZJ-2020-03292},
      pages        = {4707},
      year         = {2020},
      abstract     = {Chains of magnetic atoms with either strong spin-orbit
                      coupling or spiral magnetic order which are
                      proximity-coupled to superconducting substrates can host
                      topologically non-trivial Majorana bound states. The
                      experimental signature of these states consists of spectral
                      weight at the Fermi energy which is spatially localized near
                      the ends of the chain. However, topologically trivial
                      Yu-Shiba-Rusinov in-gap states localized near the ends of
                      the chain can lead to similar spectra. Here, we explore a
                      protocol to disentangle these contributions by artificially
                      augmenting a candidate Majorana spin chain with
                      orbitally-compatible nonmagnetic atoms. Combining scanning
                      tunneling spectroscopy with ab-initio and tight-binding
                      calculations, we realize a sharp spatial transition between
                      the proximity-coupled spiral magnetic order and the
                      non-magnetic superconducting wire termination, with
                      persistent zero-energy spectral weight localized at either
                      end of the magnetic spiral. Our findings open a new path
                      towards the control of the spatial position of in-gap end
                      states, trivial or Majorana, via different chain
                      terminations, and the realization of designer Majorana chain
                      networks for demonstrating topological quantum computation.},
      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          = {142 - Controlling Spin-Based Phenomena (POF3-142) /
                      First-principles investigation of single magnetic
                      nano-skyrmions $(jias17_20190501)$ / First-principles
                      investigation of long range effects in magnetic
                      nanostructures $(jias1c_20191101)$},
      pid          = {G:(DE-HGF)POF3-142 / $G:(DE-Juel1)jias17_20190501$ /
                      $G:(DE-Juel1)jias1c_20191101$},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:32948776},
      UT           = {WOS:000573732600001},
      doi          = {10.1038/s41467-020-18540-3},
      url          = {https://juser.fz-juelich.de/record/884855},
}