Specific heats of the charge density wave compounds o-TaS and (TaSe ) I

  • D. Starešinić
  • A. Kiš
  • K. Biljaković
  • B. Emerling
  • J. W. Brill
  • J. Souletie
  • H. Berger
  • F. Lévy

Abstract:

Specific heats of the charge-density-wave compounds o-TaS3 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 o-TaS3, 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.

PACS. 71.45.Lr Charge-density-wave systems – 65.40.Ba Heat capacity – 64.70.Kb Solid solid transitions – 64.70.Pf Glass transitions 

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Copyright information

© EDP Sciences, Springer-Verlag 2002

Authors and Affiliations

  • D. Starešinić
    • 1
  • A. Kiš
    • 1
  • K. Biljaković
    • 1
  • B. Emerling
    • 2
  • J. W. Brill
    • 2
  • J. Souletie
    • 3
  • H. Berger
    • 4
  • F. Lévy
    • 4
  1. 1.Institute of Physics, PO Box 304, 10001 Zagreb, CroatiaHR
  2. 2.Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055 USAUS
  3. 3.CRTBT-CNRS, 38042 Grenoble Cedex 9, BP 166, FranceFR
  4. 4.Institut de Physique Appliquée, EPFL, 1015, Lausanne, SwitzerlandCH

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