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@ARTICLE{Dahmen:24639,
      author       = {Dahmen, K. and Ibach, H.},
      title        = {{A}nomalies in the phonon dispersion of {M}o(110)/{L}i - a
                      {K}ohn anomaly or a stress induced effect?},
      journal      = {Surface science},
      volume       = {502-503},
      issn         = {0039-6028},
      address      = {Amsterdam},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-24639},
      pages        = {417 - 421},
      year         = {2002},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The dispersion of surface phonons for the Li-covered Mo(1 1
                      0) surface displays significant deviations from the
                      dispersion on the clean Mo surface near the (N) over bar and
                      (H) over bar points of the surface Brillouin zone, at low
                      and high coverages of Li, respectively. So far, these
                      deviations have been attributed to Kohn anomalies, similar
                      to those known for the hydrogen covered Mo-surface. The
                      failure to find appropriate nesting vectors in the Fermi
                      surface and the new measurements on the Li-induced surface
                      stress cast doubt on this interpretation, however. In this
                      paper we explore the possibility to describe the frequency
                      shifts by normal lattice dynamics which models the surface
                      stress by loaded springs between nearest and next nearest
                      neighbors in the surface. We conclude that lattice dynamics
                      can account for the observed "anomalies" and coupling to e-h
                      pair excitations need not be invoked. (C) 2002 Elsevier
                      Science B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ISG-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB43},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK242},
      shelfmark    = {Chemistry, Physical / Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000175383700062},
      doi          = {10.1016/S0039-6028(01)01987-2},
      url          = {https://juser.fz-juelich.de/record/24639},
}