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@ARTICLE{Niu:837708,
      author       = {Niu, Chengwang and Buhl, Patrick and Bihlmayer, Gustav and
                      Wortmann, Daniel and Dai, Ying and Blügel, Stefan and
                      Mokrousov, Yuriy},
      title        = {{T}wo-dimensional topological nodal line semimetal in
                      layered {X} 2 {Y} ( {X} = {C}a , {S}r, and {B}a; {Y} = {A}s
                      , {S}b, and {B}i)},
      journal      = {Physical review / B},
      volume       = {95},
      number       = {23},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2017-06568},
      pages        = {235138},
      year         = {2017},
      abstract     = {In topological semimetals the Dirac points can form
                      zero-dimensional and one-dimensional manifolds, as predicted
                      for Dirac/Weyl semimetals and topological nodal line
                      semimetals, respectively. Here, based on first-principles
                      calculations, we predict a topological nodal line semimetal
                      phase in the two-dimensional compounds X2Y (X = Ca, Sr, and
                      Ba; Y = As, Sb, and Bi) in the absence of spin-orbit
                      coupling (SOC) with a band inversion at the M point. A
                      nontrivial Z2 invariant of Z2=1 remains although a tiny gap
                      appears at the nodal line when SOC is included. The mirror
                      symmetry as well as the electrostatic interaction, which can
                      be engineered via strain, are responsible for the nontrivial
                      phase. In addition, the nontrivial phase is further
                      explicitly confirmed via the existence of exotic edge states
                      without and with SOC.},
      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          = {522 - Controlling Spin-Based Phenomena (POF3-522) / 142 -
                      Controlling Spin-Based Phenomena (POF3-142) / 143 -
                      Controlling Configuration-Based Phenomena (POF3-143) /
                      Magnetic Anisotropy of Metallic Layered Systems and
                      Nanostructures $(jiff13_20131101)$ / Topological transport
                      in real materials from ab initio $(jias12_20121101)$},
      pid          = {G:(DE-HGF)POF3-522 / G:(DE-HGF)POF3-142 /
                      G:(DE-HGF)POF3-143 / $G:(DE-Juel1)jiff13_20131101$ /
                      $G:(DE-Juel1)jias12_20121101$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000404018100001},
      doi          = {10.1103/PhysRevB.95.235138},
      url          = {https://juser.fz-juelich.de/record/837708},
}