Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 36: Poster Session II (Metals; Nanostructures at surfaces; Surface or interface magnetism; Spin-Orbit Interaction at Surfaces; Electron and spin dynamics; Surface dynamics; Methods; Theory and computation of electronic structure)
O 36.50: Poster
Dienstag, 15. März 2011, 18:30–22:00, P4
Epitaxial growth of hexagonal boron nitride on Ag(111) — •Frank Müller1, Stefan Hüfner1, Hermann Sachdev2, Robert Laskowski3, Peter Blaha3, and Karlheinz Schwarz3 — 1Department of Experimental Physics, Saarland University, D-66041 Saarbrücken, Germany — 2Inorganic Chemistry, Saarland University, 66041 Saarbrücken, Germany — 3Institute of Materials Chemistry, Vienna University of Technology, A-1060 Vienna, Austria
The epitaxial growth of hexagonal boron nitride on a Ag(111) surface by chemical vapor deposition of borazine (HBNH)3 and trichlorborazine (ClBNH)3 is investigated by X-ray photoelectron spectroscopy (XPS) and low-energy electron diffraction (LEED). In contrast to other transition-metal surfaces of hexagonal symmetry, such as Ni(111), Rh(111), or Ru(0001), the hexagonal BN layers form domains of arbitrary orientation, independent on the precursor. This indicates that - with respect to the Ag(111) lattice - there is no preferred direction for the growth of BN. These results are in accordance with recent ab initio calculations that predict vanishing or at least very weak bonding energies for BN on (111) surfaces of noble metals. Phys. Rev. B 82, 113406 (2010)