Water overlayers on Cu(110) studied by van der Waals density functionals

  • Sheng Meng


We investigate water overlayer structures on a model open metal surface: Cu(110), employing recently developed van der Waals density functionals (vdW-DFs). Both intact and half-dissociated layers are considered. We found that all the three structures (H-up, H-down and half-dissociated layer) have very close adsorption energies (differences < 0.16 eV) in all density functionals used here (two GGAs and two vdW-DFs), implying they have similar wetting orders on this surface. More importantly, we found that a hybrid vdW-DF approach treating water-Cu interaction with PBE exchange and hydrogen bonds with revPBE exchange yields best results for explaining experimentally observed wetting behavior of water on Cu(110).


Adsorption Energy Cohesive Energy Density Function Theory Large Adsorption Energy Model Open Metal 
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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Sheng Meng
    • 1
  1. 1.Beijing National Laboratory for Condensed Matter Physics, and Institute of PhysicsChinese Academy of SciencesBeijingChina

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