Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1591202 | Solid State Communications | 2016 | 6 Pages |
Abstract
The set of elastic constants of the charge density wave (CDW) rare earth tritelluride TbTe3 has been measured at 15 MHz in the temperature range 300-360 K. Large anomalies in the velocity and ultrasonic attenuation of the longitudinal C11 and C33 modes are observed at the charge density wave phase transition TCDW=333 K. Anisotropic stress dependence âTCDW/âÏ is found, the components âTCDW/âÏ11 and âTCDW/âÏ33 in the (a,c) plane are one order of magnitude larger than the component âTCDW/âÏ22 perpendicular to it. The Landau theory has been used to explain the experimental data. Critical behaviour near the charge density wave phase transition is described in terms of a phenomenological dynamic scaling theory.
Keywords
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
M. Saint-Paul, C. Guttin, P. Lejay, G. Remenyi, O. Leynaud, P. Monceau,