Angle Resolved Photoemission Spectroscopy of the InP(001) surface

  • Frisch A
  • Vogt P
  • Visbeck S
 et al. 
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Abstract

The P-rich (2×1)/(2×2) and the In-rich (2×4) reconstructions of InP(001) are studied by Angle Resolved Photoemission Spectroscopy (ARPES). Experimental results for the In-rich (2×4) InP(001) surface show two bound surface states and one surface resonance, located at -1.6 eV binding energy. This agrees well with ab-initio calculations. For the P-rich (2×1)/(2×2) InP(001) surface, neither theoretical nor experimental work regarding the electronic surface structure exists until now. We identify two possible surface states showing no discernible dispersion along the Γ̄-J̄ and Γ̄-J̄′ directions of the surface Brillouin zone (SBZ). The energetically highest state, located close to the valence band maximum (VBM), is only observed along the [1̄10] direction and is most likely a P-dimer-bond state. The second state, located at -4.4 eV binding energy, is assigned to a surface resonance.

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Authors

  • A.M. Frisch

  • P. Vogt

  • S. Visbeck

  • T. Hannappel

  • F. Willig

  • W. Braun

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