The valence band structure of the ZnSe{001}-(2 × 1) surface as determined by angle-resolved photoemission spectroscopy

Y. Zhang, J. Y. Xue, J. A. Con Foo, A. P.J. Stampfl, D. Wolfframm, D. A. Evans, J. D. Riley, R. C.G. Leckey, A. Ziegler, B. Mattern, R. Graupner, M. Hollering, R. Denecke, L. Ley

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8 Citations (SciVal)

Abstract

The valence band structure of the (2×1) reconstructed surface of ZnSe{001} has been investigated using angle-resolved photoemission spectroscopy. The results of our analysis are consistent with the band structure of a previously proposed (2 × 1) Se dimer-terminated surface and showed that there may be three surface resonance states lying in the first 3 eV from the top of the valence band maximum which extend over most of the length of the Brillouin zone along the 〈110〉 direction. A fourth feature identified as a surface state was observed around the X point at ∼ -5.8 eV. The gap surface state previously predicted for the Se dimer-terminated surface was barely resolvable and was found to lie just above the valence band maximum at the Γ point.

Original languageEnglish
Pages (from-to)288-293
Number of pages6
JournalSurface Science
Volume377-379
DOIs
Publication statusPublished - 20 Apr 1997

Keywords

  • Angle resolved photoemission
  • Low index single crystal surfaces
  • Zinc selenide

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