Temperature dependence of the first-order Raman phonon lines in GaS0.25Se0.75 layered crystals

Date

2002-12-01

Author

Hasanlı, Nızamı

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Systematic measurements by Raman scattering. of the frequency and line width of the zone-center optical modes in GaS0.25Se0.75 layered crystal over the temperature, range of 10-300 K are carried out. The analysis of-temperature dependence of intralayer modes shows that frequency shift and line broadening are successfully modeled by including the contributions from thermal expansion and lattice anharmonicity. The purely anharmonic contribution (phonon-phonon coupling) is found to be due to three-phonon processes.

Subject Keywords

General Physics and Astronomy

URI

https://hdl.handle.net/11511/39842

Journal

ACTA PHYSICA POLONICA A

DOI

https://doi.org/10.12693/aphyspola.102.801

Collections

Department of Physics, Article

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Citation Formats

N. Hasanlı, “Temperature dependence of the first-order Raman phonon lines in GaS0.25Se0.75 layered crystals,” ACTA PHYSICA POLONICA A, pp. 801–810, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39842.