Atomic-Scale Structure and Stability of the √31x√31R9° Surface of Al2O3(0001)

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  • Jeppe Vang Lauritsen
  • Mona Christine Robenhagen Jensen, Denmark
  • Krithika Venkataramani, Denmark
  • Berit Hinnemann, Haldor Topsøe A/S, Denmark
  • Stig Helveg, Haldor Topsøe A/S, Denmark
  • Bjerne S Clausen, Haldor Topsøe A/S, Denmark
  • Flemming Besenbacher
  • Department of Physics and Astronomy
  • Interdisciplinary Nanoscience Center
  • iNano-School
Through the interplay of noncontact atomic force microscopy studies and density functional theory calculations, an atomistic model for the Al2O3(0001)-sqrt(31)×sqrt(31)R9° surface reconstruction is revealed. The surface is found to consist of an Al adlayer on the Al2O3 substrate, and the driving force for the formation of the reconstruction is related to a detailed balance between strain in the adlayer and the preference for Al atoms to be located on distinct substrate sites.
Original languageEnglish
JournalPhysical Review Letters
Pages (from-to)076103
Number of pages4
Publication statusPublished - 2009

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