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Surface structure and morphology of InAs(111)B with/without gold nanoparticles annealed under arsenic or atomic hydrogen flux

Publiceringsår: 2010
Språk: Engelska
Sidor: 354-360
Publikation/Tidskrift/Serie: Surface Science
Volym: 604
Nummer: 3-4
Dokumenttyp: Artikel
Förlag: Elsevier Science BV

Sammanfattning

We have investigated the structure and morphology of the InAs(1 1 1)B surface using Low Energy Electron Diffraction (LEED), Scanning Tunneling Microscopy (STM) and Scanning Electron Microscopy (SEM). The surface was prepared by annealing in the presence of an arsenic or atomic hydrogen pressure. A (2 x 2) reconstruction that changes into a (1 x 1) unreconstructed surface after prolonged annealing was observed irrespective of preparation method, while the surface morphology was distinctly different in the two cases. Detailed atomic scale models are proposed to explain the behavior. Deposition of An aerosol nanoparticles on the sample prior to annealing was found to have no effect on the surface reconstruction. The Au particles were found to sink into the surface. (C) 2009 Elsevier B.V. All rights reserved.

Disputation

Nyckelord

  • Physics and Astronomy
  • Scanning Tunneling Microscopy
  • InAs
  • Au

Övriga

Published
Yes
  • ISSN: 0039-6028

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