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Anharmonic line shift and linewidth of the Raman modes in TlInS2 layered crystals
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Date
2004-01-01
Author
Yuksek, NS
Hasanlı, Nızamı
Aydinli, A
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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The temperature dependence of the unpolarized Raman spectra from TlInS2 layered crystal was measured between 10 and 300 K. The analysis of the experimental data showed that the temperature dependences of wavenumbers and linewidths are well described by considering the contributions from thermal expansion and lattice anharmonicity. The purely anharmonic contribution (phonon-phonon coupling) was found to be due to three-phonon processes. This work demonstrates that the two Raman modes at 280.9 and 292.3 cm(-1) exhibit changes toward high wavenumbers as the temperature is raised from 10 to 300 K. Copyright (C) 2003 John Wiley Sons, Ltd.
Subject Keywords
Spectroscopy
,
General Materials Science
URI
https://hdl.handle.net/11511/39757
Journal
JOURNAL OF RAMAN SPECTROSCOPY
DOI
https://doi.org/10.1002/jrs.1083
Collections
Department of Physics, Article