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@ARTICLE{Blowey:894721,
      author       = {Blowey, P. J. and Haags, A. and Rochford, L. A. and Felter,
                      J. and Warr, D. A. and Duncan, D. A. and Lee, T.-L. and
                      Costantini, G. and Kumpf, C. and Woodruff, D. P.},
      title        = {{C}haracterization of growth and structure of {TCNQ} phases
                      on {A}g(111)},
      journal      = {Physical review materials},
      volume       = {3},
      number       = {11},
      issn         = {2475-9953},
      address      = {College Park, MD},
      publisher    = {APS},
      reportid     = {FZJ-2021-03373},
      pages        = {116001},
      year         = {2019},
      abstract     = {A combination of scanning tunneling microscopy, low-energy
                      electron diffraction,and low-energy electron microscopy
                      (LEEM) has been used to identify the structural phases
                      formed by 7,7,8,8-tetracyanoquinodimethane (TCNQ) on
                      Ag(111). These comprise a two-dimensional gas phase, a
                      low-density commensurate (LDC) phase, and a higher-density
                      incommensurate (HDI) phase. LEEM also shows the presence of
                      an additional “precursor-HDI” phase with a surface unit
                      mesh area only $≈3\%$ less than the HDI phase. Normal
                      incidence x-ray standing-wave measurements of the HDI phase
                      yield almost identical structural parameters to the LDC
                      phase for which a full structure determination has been
                      previously reported. The results show TCNQ does not adopt
                      the inverted bowl distortion favored in earlier density
                      functional theory calculations of TCNQ on coinage metal
                      surfaces, but the N atoms are twisted out of the molecular
                      plane, an effect found for the LDC phase to be due to
                      incorporation of Ag adatoms. The possible role of Ag adatoms
                      in the HDI phase, and in the transition from the
                      precursor-HDI phase, is discussed.},
      cin          = {PGI-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-3-20110106},
      pnm          = {5213 - Quantum Nanoscience (POF4-521)},
      pid          = {G:(DE-HGF)POF4-5213},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000494462100002},
      doi          = {10.1103/PhysRevMaterials.3.116001},
      url          = {https://juser.fz-juelich.de/record/894721},
}