Dispersive collective charge modes in a spin 1/2 cuprate ladder

L. Wray, D. Qian, D. Hsieh, Y. Xia, T. Gog, D. Casa, H. Eisaki, M. Z. Hasan

    Research output: Contribution to journalArticlepeer-review


    We present the momentum evolution of collective charge modes in Sr14Cu24O41 over the complete Brillouin zone using inelastic resonant X-ray scattering. The observed spectrum is found to be dispersive with periodicity corresponding to the ladder sublattice for momentum transfers along the ladder "leg" direction, and nondispersive along the "rung". Details of the spectrum, including dispersion and linewidth, fall between characteristic charge spectra of single chain quasi-1D Mott insulators and quasi-2D cuprates.

    Original languageEnglish (US)
    Pages (from-to)1456-1458
    Number of pages3
    JournalPhysica B: Condensed Matter
    Issue number5-9
    StatePublished - Apr 1 2008


    • Ladder
    • Low dimensional cuprate
    • Resonant inelastic X-ray scattering
    • SrCuO

    ASJC Scopus subject areas

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


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