Electronic states for InAs(111)A-(2×2)S surface studied by angle-resolved photoemission spectroscopy

S. Ichikawa, N. Sanada, M. Shimomura, Tadashi Abukawa, S. Kono, Y. Fukuda

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Valence electronic states for an InAs(111)A-(2×2)S surface are investigated by using synchrotron radiation angle-resolved photoemission spectroscopy (SRARPES). Three bands at 1.0-1.2, 3.3, and 4.6-4.7 eV below the Fermi level are found outside the projection of bulk bands along the M̄-Γ̄-M̄′ and Γ̄-K̄-M̄ azimuths. A band at 2.8 eV below the Fermi level is found in the normal emission spectra for the (2×2)S surface. This band is located within the projection of bulk bands and independent of the momentum component normal to the surface, k. The four bands are ascribed to surface states or surface resonances for the (2×2)S surface. The origin of the surface bands is discussed.

Original languageEnglish
Pages (from-to)509-513
Number of pages5
JournalSurface Science
Volume454
Issue number1
DOIs
Publication statusPublished - 2000 May 20
EventECOSS-18: 18th European Conference on Surface Science - Vienna, Austria
Duration: 1999 Sep 211999 Sep 24

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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