High-pressure low-temperature phase transition in a dopedpara-terphenyl crystal: A spectral-hole-burning study
- 1 January 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 57 (1) , 14-17
- https://doi.org/10.1103/physrevb.57.14
Abstract
The homogeneous width of zero-phonon lines in a chlorin-doped para-terphenyl crystal is determined by spectral hole burning at under various hydrostatic pressures up to 7 kbar. A drastic broadening of spectral holes with pressure occurs on approaching the order-disorder (triclinic-to-monoclinic) phase transition which takes place under at The thermal broadening of spectral holes at fixed pressures is an activated process with the activation energy depending on pressure and having a deep minimum at i.e., in the phase-transition region.
Keywords
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