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@ARTICLE{Ueba:2782,
      author       = {Ueba, H. and Persson, B. N. J.},
      title        = {{H}eat transfer between adsorbate and laser-heated hot
                      electrons},
      journal      = {Journal of physics / Condensed matter},
      volume       = {20},
      issn         = {0953-8984},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {PreJuSER-2782},
      pages        = {224016},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Strong short laser pulses can give rise to a strong
                      increase in the electronic temperature at metal surfaces.
                      Energy transfer from the hot electrons to adsorbed molecules
                      may result in adsorbate reactions, e. g. desorption or
                      diffusion. We point out the limitations of an often used
                      equation to describe the heat transfer process in terms of a
                      friction coupling. We propose a simple theory for the energy
                      transfer between the adsorbate and hot electrons using a
                      newly introduced heat transfer coefficient, which depends on
                      the adsorbate temperature. We calculate the transient
                      adsorbate temperature and the reaction yield for a Morse
                      potential as a function of the laser fluency. The results
                      are compared to those obtained using a conventional heat
                      transfer equation with temperature-independent friction. It
                      is found that our equation of energy ( heat) transfer gives
                      a significantly lower adsorbate peak temperature, which
                      results in a large modification of the reaction yield. We
                      also consider the heat transfer between different
                      vibrational modes excited by hot electrons. This mode
                      coupling provides indirect heating of the vibrational
                      temperature in addition to the direct heating by hot
                      electrons. The formula of heat transfer through linear
                      mode-mode coupling of two harmonic oscillators is applied to
                      the recent time-resolved study of carbon monoxide and atomic
                      oxygen hopping on an ultrafast laser-heated Pt(111) surface.
                      It is found that the maximum temperature of the frustrated
                      translation mode can reach high temperatures for hopping,
                      even when direct friction coupling to the hot electrons is
                      not strong enough.},
      keywords     = {J (WoSType)},
      cin          = {IFF-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB781},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000256145700019},
      doi          = {10.1088/0953-8984/20/22/224016},
      url          = {https://juser.fz-juelich.de/record/2782},
}