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Updated: Jun 3, 2026

Scanning-probe Single-electron Capacitance Spectroscopy
Published on: July 30, 2013
Spectroscopy of systems with time variable parameters: photoreflectance of GaAs(001) under cesium adsorption
A G Zhuravlev1, H E Scheibler, A S Jaroshevich
1Institute of Semiconductor Physics, Prospekt Lavrentieva, 13, 630090 Novosibirsk, Russia.
Abstract:
A modification of photoreflectance spectroscopy, which improves the precision and efficiency of measuring time-evolving surface electric fields, is proposed. This modification is explored for studying the band bending evolution under cesium adsorption on the reconstructed GaAs(001) surface and relaxation processes in the non-equilibrium adsorbate overlayer. Observation of several distinct maxima and minima in the coverage dependence of the band bending can be explained by the formation of adatom-induced surface states with a quasi-discrete spectrum.
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