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@ARTICLE{Heedt:827267,
      author       = {Heedt, Sebastian and Schäpers, Thomas and Traverso Ziani,
                      N. and Crepin, F. and Prost, W. and Trellenkamp, Stefan and
                      Schubert, Jürgen and Grützmacher, Detlev and Trauzettel,
                      B.},
      title        = {{S}ignatures of interaction-induced helical gaps in
                      nanowire quantum point contacts},
      journal      = {Nature physics},
      volume       = {13},
      issn         = {1745-2473},
      address      = {Basingstoke},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2017-01461},
      pages        = {563–567},
      year         = {2017},
      abstract     = {Spin–momentum locking in a semiconductor device with
                      strong spin–orbit coupling (SOC) is thought to be an
                      important prerequisite for the formation of Majorana bound
                      states1, 2, 3. Such a helical state is predicted in
                      one-dimensional (1D) nanowires subject to strong Rashba SOC
                      and spin-mixing4—its hallmark being a characteristic
                      re-entrant behaviour in the conductance. Here, we report
                      direct experimental observations of the re-entrant
                      conductance feature, which reveals the formation of a
                      helical liquid, in the lowest 1D subband of an InAs
                      nanowire. Surprisingly, the feature is very prominent also
                      in the absence of magnetic fields. This behaviour suggests
                      that exchange interactions have a substantial impact on
                      transport in our device. We attribute the opening of the
                      pseudogap to spin-flipping two-particle backscattering5, 6,
                      7. The all-electric origin of the ideal helical transport
                      could have important implications for topological quantum
                      computing.},
      cin          = {PGI-9 / PGI-8-PT / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)PGI-8-PT-20110228
                      / $I:(DE-82)080009_20140620$},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522)},
      pid          = {G:(DE-HGF)POF3-522},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000402604200016},
      doi          = {10.1038/nphys4070},
      url          = {https://juser.fz-juelich.de/record/827267},
}