Surface states band structure of Gd-induced one-dimensional chain structure on Si(111) surface measured by angle-resolved photoelectron spectroscopy

Taichi Okuda, Takahide Tohyama, Xiao Dong Ma, Takanori Wakita, Ayumi Harasawa, Toyohiko Kinoshita

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The surface states dispersion of the Gd-induced one-dimensional chain structure on Si(111) with a 5×2 periodicity was determined by means of angle-resolved photoelectron spectroscopy(ARPES). At least three surface states are observed at the binding energy of around 1-2eV. The dispersions of these surface states resemble those of the alkali-earth metal-induced Si(111) 5×2 surface suggesting a similar surface atomic structure. Besides these three prominent surface states, another state with very weak intensity is also observed near the Fermi level; this is different from the alkali-earth metal-induced 5×2 surface in which the surface electronic state is semiconducting.

Original languageEnglish
Pages (from-to)125-129
Number of pages5
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume137-140
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - Jul 1 2004
Externally publishedYes

Keywords

  • ARPES
  • Band dispersion
  • One-dimensional structure
  • Rare-earth metal
  • Si(111)
  • Surface states

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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