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@ARTICLE{Zhu:894929,
      author       = {Zhu, Fengfeng and Zhang, Lichuan and Wang, Xiao and Dos
                      Santos, Flaviano José and Song, Junda and Mueller, Thomas
                      and Schmalzl, Karin and Schmidt, Wolfgang F. and Ivanov,
                      Alexandre and Park, Jitae T. and Xu, Jianhui and Ma, Jie and
                      Lounis, Samir and Blügel, Stefan and Mokrousov, Yuriy and
                      Su, Yixi and Brückel, Thomas},
      title        = {{T}opological magnon insulators in two-dimensional van der
                      {W}aals ferromagnets {C}r{S}i{T}e3 and {C}r{G}e{T}e3 :
                      {T}oward intrinsic gap-tunability},
      journal      = {Science advances},
      volume       = {7},
      number       = {37},
      issn         = {2375-2548},
      address      = {Washington, DC [u.a.]},
      publisher    = {Assoc.},
      reportid     = {FZJ-2021-03488},
      pages        = {eabi7532},
      year         = {2021},
      abstract     = {The bosonic analogs of topological insulators have been
                      proposed in numerous theoretical works, but their
                      experimental realization is still very rare, especially for
                      spin systems. Recently, two-dimensional (2D) honeycomb van
                      der Waals ferromagnets have emerged as a new platform for
                      topological spin excitations. Here, via a comprehensive
                      inelastic neutron scattering study and theoretical analysis
                      of the spin-wave excitations, we report the realization of
                      topological magnon insulators in CrXTe3 (X = Si, Ge)
                      compounds. The nontrivial nature and intrinsic tunability of
                      the gap opening at the magnon band-crossing Dirac points are
                      confirmed, while the emergence of the corresponding in-gap
                      topological edge states is demonstrated theoretically. The
                      realization of topological magnon insulators with intrinsic
                      gap-unability in this class of remarkable 2D materials will
                      undoubtedly lead to new and fascinating technological
                      applications in the domain of magnonics and topological
                      spintronics.},
      cin          = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC / JCNS-FRM-II /
                      JCNS-ILL / JCNS-2 / JCNS-4 / MLZ},
      ddc          = {500},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
                      $I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$ /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-ILL-20110128 / I:(DE-Juel1)JCNS-2-20110106
                      / I:(DE-Juel1)JCNS-4-20201012 / I:(DE-588b)4597118-3},
      pnm          = {5211 - Topological Matter (POF4-521) / 6G4 - Jülich Centre
                      for Neutron Research (JCNS) (FZJ) (POF4-6G4) / 632 -
                      Materials – Quantum, Complex and Functional Materials
                      (POF4-632)},
      pid          = {G:(DE-HGF)POF4-5211 / G:(DE-HGF)POF4-6G4 /
                      G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)DNS-20140101 / EXP:(DE-Juel1)ILL-IN12-20150421
                      / EXP:(DE-MLZ)PUMA-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34516772},
      UT           = {WOS:000695713400030},
      doi          = {10.1126/sciadv.abi7532},
      url          = {https://juser.fz-juelich.de/record/894929},
}