Eloisa Bentivegna
Big Data 2022
Using the Raman technique, we have observed large abrupt reversible changes in the phonon spectrum at the transition temperature, Tc = 147°C, of the superionic conductor AgI. The defect nature of the high temperature phase completely breaks down the selection rules and allows the Raman measurements to give a measure of the frequency dependent conductivity, σ(ω), assuming a frequency independent matrix element. Similarities as well as differences in σ(ω) above and below Tc are shown. © 1976.
Eloisa Bentivegna
Big Data 2022
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