Surface resonance on the (6 root 3 x 6 root 3)-R30 degrees-reconstructed 5 ML Au on (root 3 x root 3)-R30 degrees-4H-SiC(0001)

Research output: Contribution to journalArticle

Abstract

In this paper we present evidence for a surface resonance on the (6v root 3 x 6 root 3)-R30 degrees-reconstruction obtained on 5 monolayers (ML) of An deposited on the (root 3 x root 3)-R30 degrees-4H-SiC(0001) and subsequently annealed. We use synchrotron radiation-based angle resolved photoelectron spectroscopy to show that this resonance has no k(parallel to)-dispersion, but a parabolic-like kil-dispersion of 0.4 eV around Gamma. Its electronic localization in the (6 root 3- x 6 root 3-)-R30 degrees surface reconstruction is documented by comparison with the (2 root 3- x 2 root 3-)-R30 degrees structure, obtained at a slightly lower annealing temperature after 5 ML Au deposition on the (root 3- x root 3)-R30 degrees-4H-SiC(0001) substrate. (c) 2007 Elsevier B.V. All rights reserved.

Details

Authors
  • D. Stoltz
  • Sven Stoltz
  • L. S. O. Johansson
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Sciences
  • Natural Sciences

Keywords

  • low energy electron diffraction (LEED), spectroscopy, synchrotron radiation angle resolved photoelectron, surface structure, surface resonance, surface electronic phenomena, gold, silicon carbide
Original languageEnglish
Pages (from-to)2508-2511
JournalSurface Science
Volume601
Issue number12
Publication statusPublished - 2007
Publication categoryResearch
Peer-reviewedYes