Ultrasonic Properties of Quasi One-Dimensional (TaSe4)2I at the Peierls Transition

  • M. Saint-Paul
  • R. Britel
  • Z. Bihar
  • J. C. Lasjaunias
  • P. Monceau
  • F. Lèvy
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 112)

Abstract

(TaSe4)2I is a quasi-1 D conductor which undergoes a Peierls transition at Tp = 260 K [1]. Phonon softening at 2kF (Fermi momentum) induces lattice modulations associated with an electron charge density wave (CDW). Elastic singularities at the Peierls transition are not yet well understood [2]. The associated singularity in the sound velocity examined theoretically by Nakane [3] varies like |T-Tp|−1/2 around Tp.

Keywords

Attenuation 

References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • M. Saint-Paul
    • 1
  • R. Britel
    • 1
  • Z. Bihar
    • 1
  • J. C. Lasjaunias
    • 1
  • P. Monceau
    • 1
  • F. Lèvy
    • 2
  1. 1.Centre de Recherches sur les Très Basses TempératuresLaboratoire associé à l’Université Joseph Fourier, C.N.R.S.Grenoble CédexFrance
  2. 2.Institut de Physique AppliquéEcole Polytechnique Fédérale de LausanneLausanneSwitzerland

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