Two-dimensional states in the electronic structure of Au/(root 3 x root 3)-R30 degrees-4H-SiC(0001)

Research output: Contribution to journalArticle

Abstract

We present an angle-resolved photoemission study of the valence band of Au/(root 3 x root 3-) - R30 degrees-4H-SiC(0 0 0 1). Several different two-dimensional states could be identified, depending on the Au coverage and annealing temperature. In the case of silicide at the surface, two-dimensional Shockley-like state is observed for higher coverages, but a potential interface state is observed at low coverages of Au. In the case of a gold film at the surface a true, confined Shockley-type surface state is observed.

Details

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

Subject classification (UKÄ) – MANDATORY

  • Physical Sciences
  • Natural Sciences

Keywords

  • synchrotron radiation angle-resolved photoelectron, surface structure, surface state, surface electronic phenomena, gold, silicon carbide, spectroscopy
Original languageEnglish
Pages (from-to)1-6
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume163
Issue number1-3
Publication statusPublished - 2008
Publication categoryResearch
Peer-reviewedYes