Surface Related Electronic States on CdTe(110) Observed by Means of Optical Spectroscopy
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Surface differential reflectivity together with photoemission and Auger electron spectroscopies have been applied to observe and identify optical transitions among surface related states on CdTe(110) surfaces. The strongest contributions to the band of optical transitions have been revealed at the photon energies of 2.8, 3.4, and 3.9 eV. Their correspondence to excitations from the occupied S1 band to the unoccupied U1 one at the Γ, Χ and Χ' points of the surface Brillouin zone is discussed.
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