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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