Electromechanical effect in charge- and spin-density waves

A. Virosztek, K. Maki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We study the sound propagation in charge- and spin-density wave systems in the hydrodynamic limit. For the longitudinal sound wave the long-range Coulomb interaction plays a crucial role in suppressing charge fluctuations. We find that the longitudinal wave does not couple to the phason (i.e. no electromechanical effect) independent of the direction of the polarization vector u, while the transverse wave couples to the phason only if u is parallel to the chain direction. This describes at least qualitatively a peculiar asymmetry found recently in sound propagation in (TaSe4)2I.

Original languageEnglish
Pages (from-to)1283-1285
Number of pages3
JournalSynthetic Metals
Volume70
Issue number1-3
DOIs
Publication statusPublished - Mar 15 1995

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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