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@ARTICLE{Rogalev:872543,
      author       = {Rogalev, V. A. and Reis, F. and Adler, F. and Bauernfeind,
                      M. and Erhardt, J. and Kowalewski, A. and Scholz, M. R. and
                      Dudy, L. and Duffy, L. B. and Hesjedal, T. and Hoesch, M.
                      and Bihlmayer, G. and Schäfer, J. and Claessen, R.},
      title        = {{T}ailoring the topological surface state in ultrathin α
                      -{S}n(111) films},
      journal      = {Physical review / B},
      volume       = {100},
      number       = {24},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2020-00061},
      pages        = {245144},
      year         = {2019},
      abstract     = {We report on the electronic structure of α-Sn films in the
                      very low thickness regime grown on InSb(111)A.
                      High-resolution low photon energy angle-resolved
                      photoemission spectroscopy allows for the direct observation
                      of the linearly dispersing two-dimensional (2D) topological
                      surface state (TSS) that exists between the second valence
                      band and the conduction band. The Dirac point of this TSS
                      was found to be 200 meV below the Fermi level in 10-nm-thick
                      films, which enables the observation of the hybridization
                      gap opening at the Dirac point of the TSS for thinner films.
                      The crossover to a quasi-2D electronic structure is
                      accompanied by a full gap opening at the Brillouin-zone
                      center, in agreement with our density functional theory
                      calculations. We further identify the thickness regime of
                      α-Sn films where the hybridization gap in the TSS coexists
                      with the topologically nontrivial electronic structure and
                      one can expect the presence of a one-dimensional helical
                      edge state.},
      cin          = {PGI-1 / IAS-1 / JARA-FIT / JARA-HPC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406 /
                      $I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
      pnm          = {142 - Controlling Spin-Based Phenomena (POF3-142) /
                      Magnetic Anisotropy of Metallic Layered Systems and
                      Nanostructures $(jiff13_20131101)$},
      pid          = {G:(DE-HGF)POF3-142 / $G:(DE-Juel1)jiff13_20131101$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000504446200005},
      doi          = {10.1103/PhysRevB.100.245144},
      url          = {https://juser.fz-juelich.de/record/872543},
}