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Rasmus Westerström

Associate senior lecturer

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Influence of chemical interaction at the lattice-mismatched h-BN/Rh(111) and h-BN/Pt(111) interfaces on the overlayer morphology

Author

  • Alexei Preobrajenski
  • A. S. Vinogradov
  • May Ling Ng
  • Elizabeta Cavar
  • Rasmus Westerström
  • Anders Mikkelsen
  • Edvin Lundgren
  • Nils Mårtensson

Summary, in English

The atomic and electronic structure of the lattice-mismatched h-BN/Pt(111) and h-BN/Rh(111) interfaces formed by pyrolitic reactions with vaporized borazine has been studied by low-energy electron diffraction, scanning tunneling microscopy, x-ray-absorption spectroscopy, and core-level and valence-band photoemission. It has been found that on Pt(111), h-BN forms a nearly flat monolayer, insignificantly corrugated across the supercell. On Rh(111), h-BN grows in form of a nanomesh, as originally observed by Corso [Science 303, 217 (2004)]. The structural difference between the h-BN/Pt(111) and h-BN/Rh(111) interfaces is associated with the strength of chemical interaction between h-BN and the substrate surface. A stronger orbital hybridization on Rh(111) results in a stronger attraction of the monolayer to the metal surface at favorable adsorption sites resulting in a highly corrugated structure (nanomesh). It has been shown that the electronic structure of the outer (elevated) and inner (attracted to the surface) nanomesh sites is very different as a result of different chemical bonding to the substrate (weak and strong, respectively).

Department/s

  • MAX IV Laboratory
  • Synchrotron Radiation Research

Publishing year

2007

Language

English

Pages

1-245412

Publication/Series

Physical Review B (Condensed Matter and Materials Physics)

Volume

75

Issue

24

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics
  • Natural Sciences
  • Physical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1098-0121