Eur. Phys. J. B 29, 71-77 (2002)
https://doi.org/10.1140/epjb/e2002-00263-1

Specific heats of the charge density wave compounds o-TaS₃ and (TaSe₄)₂I

¹ Institute of Physics, PO Box 304, 10001 Zagreb, Croatia
² Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055 USA
³ CRTBT-CNRS, 38042 Grenoble Cedex 9, BP 166, France
⁴ Institut de Physique Appliquée, EPFL, 1015, Lausanne, Switzerland

Corresponding author: ^a damirs@ifs.hr

Received: 5 April 2002
Revised: 28 June 2002
Published online: 17 September 2002

Abstract

Specific heats of the charge-density-wave compounds and (TaSe₄)₂I have been measured over the wide temperature interval 10 K–300 K. Both systems exhibit strong non-Debye behavior. Very weak and broad anomalies are observed at the Peierls transition temperatures. For , the change in the curvature of the specific heat occurs at temperature of 40 K where glass transition has been deduced from dielectric measurements, and an extended scaling analysis suggests that the glass transition is associated with a dynamical cross over in length scales. We briefly discuss the characteristics and physical origins of the anomalies at both the Peierls and glass transitions.