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@ARTICLE{Niu:873882,
      author       = {Niu, Chengwang and Mao, Ning and Huang, Baibiao and
                      Mokrousov, Yuriy and Dai, Ying},
      title        = {{A}ntiferromagnetic {T}opological {I}nsulator with
                      {N}onsymmorphic {P}rotection in {T}wo {D}imensions},
      journal      = {Physical review letters},
      volume       = {124},
      number       = {6},
      issn         = {1079-7114},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2020-01072},
      pages        = {066401},
      year         = {2020},
      abstract     = {The recent demonstration of topological states in
                      antiferromagnets (AFMs) provides an exciting platform for
                      exploring prominent physical phenomena and applications of
                      antiferromagnetic spintronics. A famous example is the AFM
                      topological insulator (TI) state, which, however, was still
                      not observed in two dimensions. Using a tight-binding model
                      and first-principles calculations, we show that, in contrast
                      to previously observed AFM topological insulators in three
                      dimensions, an AFM TI can emerge in two dimensions as a
                      result of a nonsymmorphic symmetry that combines the twofold
                      rotation symmetry and half-lattice translation. Based on the
                      spin Chern number, Wannier charge centers, and gapless edge
                      states analysis, we identify intrinsic AFM XMnY (X=Sr and
                      Ba, Y=Sn and Pb) quintuple layers as experimentally feasible
                      examples of predicted topological states with a stable
                      crystal structure and giant magnitude of the nontrivial band
                      gaps, reaching as much as 186 meV for SrMnPb, thereby
                      promoting these systems as promising candidates for
                      innovative spintronics applications.},
      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) /
                      Topological transport in real materials from ab initio
                      $(jiff40_20190501)$},
      pid          = {G:(DE-HGF)POF3-142 / $G:(DE-Juel1)jiff40_20190501$},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:32109083},
      UT           = {WOS:000513240600008},
      doi          = {10.1103/PhysRevLett.124.066401},
      url          = {https://juser.fz-juelich.de/record/873882},
}