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@ARTICLE{Schnauer:826070,
      author       = {Schönauer, K. and Weiss, S. and Feyer, V. and Lüftner, D.
                      and Stadtmüller, B. and Schwarz, D. and Sueyoshi, T. and
                      Kumpf, C. and Puschnig, P. and Ramsey, M. G. and Tautz, F.
                      S. and Soubatch, S.},
      title        = {{C}harge transfer and symmetry reduction at the
                      {C}u{P}c/{A}g(110) interface studied by photoemission
                      tomography},
      journal      = {Physical review / B},
      volume       = {94},
      number       = {20},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2017-00330},
      pages        = {205144},
      year         = {2016},
      abstract     = {On the Ag(110) surface copper phthalocyanine (CuPc) orders
                      in two structurally similar superstructures, as revealed by
                      low-energy electron diffraction. Scanning tunneling
                      microscopy (STM) shows that in both superstructures the
                      molecular planes are oriented parallel to the surface and
                      the long molecular axes, defined as diagonals of the square
                      molecule, are rotated by ≃±32∘ away from the
                      high-symmetry directions [1¯10] and [001] of the silver
                      surface. Similarly to many other adsorbed metal
                      phthalocyanines, the CuPc molecules on Ag(110) appear in STM
                      as crosslike features with twofold symmetry. Photoemission
                      tomography based on angle-resolved photoemission
                      spectroscopy reveals a charge transfer from the substrate
                      into the molecule. A symmetry analysis of experimental and
                      theoretical constant binding energy maps of the
                      photoemission intensity in the kx,ky-plane points to a
                      preferential occupation of one of the two initially
                      degenerate lowest unoccupied molecular orbitals (LUMOs) of
                      eg symmetry. The occupied eg orbital is rotated by 32∘
                      against the [001] direction of the substrate. The lifting of
                      the degeneracy of the LUMOs and the related reduction of the
                      symmetry of the adsorbed CuPc molecule are attributed to an
                      anisotropy in the chemical reactivity of the Ag(110)
                      surface.},
      cin          = {PGI-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-3-20110106},
      pnm          = {142 - Controlling Spin-Based Phenomena (POF3-142)},
      pid          = {G:(DE-HGF)POF3-142},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000388820200010},
      doi          = {10.1103/PhysRevB.94.205144},
      url          = {https://juser.fz-juelich.de/record/826070},
}