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@ARTICLE{Valerius:907656,
      author       = {Valerius, Philipp and Speckmann, Carsten and Senkovskiy,
                      Boris V. and Grüneis, Alexander and Atodiresei, Nicolae and
                      Michely, Thomas},
      title        = {{S}ize-limited high-density nanopore formation in
                      two-dimensional moiré materials},
      journal      = {Physical review / B},
      volume       = {105},
      number       = {20},
      issn         = {1098-0121},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2022-02135},
      pages        = {205413},
      year         = {2022},
      abstract     = {Patterns formed in monolayer graphene (Gr) and hexagonal
                      boron nitride (h-BN) upon ion irradiation in the temperature
                      range from 950 to 1530 K using 500 eV He+ at normal or 500
                      eV Xe+ at grazing incidence and fluences up to 2.5×1019
                      ions/m2 are investigated by room-temperature scanning
                      tunneling microscopy. Subnanometer pores are created and are
                      distributed with the periodicity of the moiré which results
                      from the interaction of the monolayers with their Ir(111)
                      substrate. The moiŕe contains trapping sites for vacancies
                      within each moiré unit cell as is investigated in detail
                      for the case of h-BN with the help of ab initio
                      calculations. The density of the nanopores is extremely high
                      in the order of 1017 pores/m2 and their size distribution is
                      limited by the size of the vacancy traps causing excess
                      vacancies to be expelled from the array and to anneal at
                      preexistent defects. Successful delamination of a perforated
                      Gr monolayer from the substrate is demonstrated and makes
                      the material accessible for membrane research.},
      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          = {5211 - Topological Matter (POF4-521)},
      pid          = {G:(DE-HGF)POF4-5211},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000809502700004},
      doi          = {10.1103/PhysRevB.105.205413},
      url          = {https://juser.fz-juelich.de/record/907656},
}