Excitonic reflectance of GaAs crystals cleaved in liquid helium
- 15 August 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 28 (4), 2292-2295
- https://doi.org/10.1103/physrevb.28.2292
Abstract
We report optical reflectance spectra near the excitonic resonance of GaAs. The experimental results from crystals cleaved in liquid helium and exposed to air exhibit noticeable changes of the line shape. Comparison with a model based on the adiabatic approximation indicates that line-shape distortions by surface electric fields are unavoidable for air-exposed GaAs surfaces.
Keywords
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