Abstract
Using general expressions for the velocity and ultrasonic attenuation coefficient we have analyzed ultrasonic data for the 208-K phase transition in RbAg4I5. From fitting the velocity in the high-temperature phase we obtain values for the strain and pseudospin coupling constants. We extract the intrinsic pseudospin relaxation rate from an analysis of the attenuation. The Jahn-Teller model is found to provide a good description of the ultrasonic behavior associated with the phase transition.
Original language | English (US) |
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Pages (from-to) | 452-456 |
Number of pages | 5 |
Journal | Physical Review Letters |
Volume | 42 |
Issue number | 7 |
DOIs | |
State | Published - 1979 |
ASJC Scopus subject areas
- General Physics and Astronomy