Electrical & Computer Engineering, Department of
Date of this Version
2019
Citation
Applied Physics Letters 114, 102102 (2019)
DOI: 10.1063/1.5089145
Abstract
In this letter, we investigate a set of n-type single crystals of monoclinic symmetry β-Ga2O3 with different free electron concentration values by generalized far infrared and infrared spectroscopic ellipsometry. In excellent agreement with our previous model prediction, we find here by experiment that longitudinal-phonon-plasmon coupled modes are polarized either within the monoclinic plane or perpendicular to the monoclinic plane. As predicted, all modes change the amplitude and frequency with the free electron concentration. The most important observation is that all longitudinal-phonon-plasmon coupled modes polarized within the monoclinic plane continuously change their direction as a function of free electron concentration.
Comments
Copyright 2019 AIP Publishing
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Applied Physics Letters 114, 102102 (2019) and may be found at https://doi.org/10.1063/1.5089145