Study of phonon anomalies in stripe phase of high Tc cuprates

Eiji Kaneshita, Masanori Ichioka, Kazushige Machida

Research output: Contribution to journalArticlepeer-review

Abstract

We theoretically investigate phonon anomalies in various high T c cuprates in terms of stripe concept. They could be caused by coupling with charge translational modes of stripes. The phonon self-energy correction is evaluated by taking into account the collective stripe modes. The coupling with stripes causes a phonon dispersion gap when the phonon dispersion has a steep slope around 2Q. No gap appears when the phonon spectrum has a flat dispersion around 2Q. Thus it turns out that these are depending on the slope of the phonon dispersions.

Original languageEnglish
Pages (from-to)777-778
Number of pages2
JournalPhysica B: Condensed Matter
Volume329-333
Issue numberII
DOIs
Publication statusPublished - May 2003

Keywords

  • Collective modes
  • Hubbard model
  • Phonons
  • Spin-density waves

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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