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@ARTICLE{Eschbach:829644,
      author       = {Eschbach, Markus and Lanius, Martin and Niu, Chengwang and
                      Mlynczak, Ewa and Gospodarič, Pika and Kellner, Jens and
                      Schüffelgen, Peter and Gehlmann, Mathias and Döring, Sven
                      and Neumann, Elmar and Luysberg, Martina and Mussler, Gregor
                      and Plucinski, Lukasz and Morgenstern, Markus and
                      Grützmacher, Detlev and Bihlmayer, Gustav and Blügel,
                      Stefan and Schneider, Claus M.},
      title        = {{B}i$_1${T}e$_1$ is a dual topological insulator},
      journal      = {Nature Communications},
      volume       = {8},
      issn         = {2041-1723},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2017-03313},
      pages        = {14976},
      year         = {2017},
      abstract     = {New three-dimensional (3D) topological phases can emerge in
                      superlattices containing constituents of known
                      two-dimensional topologies. Here we demonstrate that
                      stoichiometric Bi1Te1, which is a natural superlattice of
                      alternating two Bi2Te3 quintuple layers and one Bi bilayer,
                      is a dual 3D topological insulator where a weak topological
                      insulator phase and topological crystalline insulator phase
                      appear simultaneously. By density functional theory, we find
                      indices (0;001) and a non-zero mirror Chern number. We have
                      synthesized Bi1Te1 by molecular beam epitaxy and found
                      evidence for its topological crystalline and weak
                      topological character by spin- and angle-resolved
                      photoemission spectroscopy. The dual topology opens the
                      possibility to gap the differently protected metallic
                      surface states on different surfaces independently by
                      breaking the respective symmetries, for example, by magnetic
                      field on one surface and by strain on another surface.},
      cin          = {PGI-6 / IAS-1 / PGI-9 / ER-C-1 / JARA-FIT / PGI-1 /
                      JARA-HPC},
      ddc          = {500},
      cid          = {I:(DE-Juel1)PGI-6-20110106 / I:(DE-Juel1)IAS-1-20090406 /
                      I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)ER-C-1-20170209 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)PGI-1-20110106 /
                      $I:(DE-82)080012_20140620$},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522) /
                      Magnetic Anisotropy of Metallic Layered Systems and
                      Nanostructures $(jiff13_20131101)$},
      pid          = {G:(DE-HGF)POF3-522 / $G:(DE-Juel1)jiff13_20131101$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000399982600001},
      pubmed       = {pmid:28429708},
      doi          = {10.1038/ncomms14976},
      url          = {https://juser.fz-juelich.de/record/829644},
}