ULTRASONIC PROPERTIES OF ONE-DIMENSIONAL (TASE4)(2)I

Authors
SAINTPAUL M BRITEL R LASJAUNIAS JC MONCEAU P LEVY F
Citation
M. Saintpaul et al., ULTRASONIC PROPERTIES OF ONE-DIMENSIONAL (TASE4)(2)I, Physica. B, Condensed matter, 220, 1996, pp. 423-424
Citations number
6
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
220
Year of publication
1996
Pages
423 - 424
Database
ISI
SICI code
0921-4526(1996)220:<423:UPOO(>2.0.ZU;2-K
Abstract
We report measurements on the quasi-one-dimensional (TaSe)(2)I which u ndergoes a Peierls transition at T-p = 262 K. Softening-of the shear e lastic constant C-44 has been observed below 40 K. The effective Grune isen parameter deduced from the sound velocity increases up to 20 when temperature decreases down to 4 K. Such a large increase of Gamma(eff ) has been related to the anomalous dispersion curve of the C-44 acous tic branch of this system.