| Issue |
Europhys. Lett.
Volume 44, Number 5, December I 1998
|
|
|---|---|---|
| Page(s) | 613 - 619 | |
| Section | Condensed matter: structure, thermal and mechanical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00517-6 | |
| Published online | 01 September 2002 | |
Low-temperature dynamics of incommensurate biphenyl as probed by spectral hole burning
1
Institute of Physics, Riia 142 - EE2400 Tartu, Estonia
2
University of Tartu, Institute of Materials Science, Tähe 4 - EE2400 Tartu, Estonia
3
Technische Universität München, Lehrstuhl für Physik Weihenstephan, D-85350 Freising, Germany
Received:
18
May
1998
Accepted:
14
October
1998
We have measured the temperature dependence of the homogeneous
width of spectral holes in the incommensurate phase III of chlorin-doped
biphenyl from 60 mK to 10 K. Below 2 K a power law (
, 
for different spectral peaks) prevails. Above 2 K a strong coupling to
low-energy (5 and 
) vibrational modes dominates. No indication of a
low-temperature lock-in transition was found.
PACS: 61.44.Fw – Incommensurate crystals / 78.40.-q – Absorption and reflection spectra: visible and ultraviolet / 33.70.Jg – Line and band widths, shapes, and shifts
© EDP Sciences, 1998
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