With use of Raman spectroscopy we have investigated the anharmonic mixing between two optical phonons of Eg symmetry in red mercury iodide. By taking into account the presence of several decay channels contributing to phonon lifetime, the experimental line-shape anomalies due to mode coupling have been reproduced with good accuracy. The temperature behavior of the anharmonic interaction is in agreement with theory.
Anharmonic mixing between two phonons in red mercury iodide
BONGIOVANNI, GIOVANNI LUIGI CARLO
1988-01-01
Abstract
With use of Raman spectroscopy we have investigated the anharmonic mixing between two optical phonons of Eg symmetry in red mercury iodide. By taking into account the presence of several decay channels contributing to phonon lifetime, the experimental line-shape anomalies due to mode coupling have been reproduced with good accuracy. The temperature behavior of the anharmonic interaction is in agreement with theory.
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