Joshya, R. S. ; Rajaji, V. ; Narayana, Chandrabhas ; Mascarenhas, A. ; Kini, R. N. (2016) Anharmonicity in light scattering by optical phonons in GaAs1-xBix Journal of Applied Physics, 119 (20). Article ID 205706. ISSN 0021-8979
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Official URL: https://aip.scitation.org/doi/abs/10.1063/1.495238...
Related URL: http://dx.doi.org/10.1063/1.4952381
Abstract
We present a Raman spectroscopic study of GaAs1-xBix epilayers grown by molecular beam epitaxy. We have investigated the anharmonic effect on the GaAs-like longitudinal optical phonon mode (LO′GaAs) of GaAs1-xBix for different Bi concentrations at various temperatures. The results are analyzed in terms of the anharmonic damping effect induced by thermal and compositional disorder. We have observed that the anharmonicity increases with Bi concentration in GaAs1-xBix as evident from the increase in the anharmonicity constants. In addition, the anharmonic lifetime of the optical phonon decreases with increasing Bi concentration in GaAs1-xBix.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| ID Code: | 113734 |
| Deposited On: | 23 Apr 2018 12:06 |
| Last Modified: | 23 Apr 2018 12:06 |
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