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@ARTICLE{Ishida:860515,
      author       = {Ishida, H. and Liebsch, A. and Wortmann, D.},
      title        = {{T}opological invariants of band insulators derived from
                      the local-orbital based embedding potential},
      journal      = {Physical review / B},
      volume       = {96},
      number       = {12},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2019-01251},
      pages        = {125413},
      year         = {2017},
      abstract     = {We demonstrate that topological invariants of band
                      insulators can be derived efficiently from the eigenvalues
                      of the local-orbital (LO) based embedding potential, called
                      also the contact (lead) self-energy. The LO based embedding
                      potential is a bulk quantity. Given the tight-binding
                      Hamiltonian describing the bulk valence and conduction
                      bands, it is constructed straightforwardly from the bulk
                      wave functions satisfying the generalized Bloch condition.
                      When the one-electron energy ɛ is located within a
                      projected bulk band gap at a given planar wave vector k, the
                      embedding potential becomes Hermitian. Its real eigenvalues
                      exhibit distinctly different behavior depending on the
                      topological properties of the valence bands, thus enabling
                      unambiguous identification of bulk topological invariants.
                      We consider the Bernevig-Hughes-Zhang model as an example of
                      a time-reversal invariant topological insulator and tin
                      telluride (SnTe) crystallized in a rock-salt structure as an
                      example of a topological crystalline insulator},
      cin          = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
                      $I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000410178600009},
      doi          = {10.1103/PhysRevB.96.125413},
      url          = {https://juser.fz-juelich.de/record/860515},
}