Asymmetry in the Raman cross section from large temperature variation
- 15 May 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 27 (10) , 6066-6071
- https://doi.org/10.1103/physrevb.27.6066
Abstract
We show that in the presence of large temperature gradients the second-order Raman cross sections can show asymmetry around the optical-phonon frequency. This skewness as a function of Raman frequency is proportional to the temperature gradient and is traced to the form of the accoustical-phonon occupation. It thus provides an additional mechanism for this asymmetry in addition to the usual spatial variation considered previously.Keywords
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