Collective charge modes in quasi-1D Mott insulator SrCuO2

L. Wray, D. Qian, Y. W. Li, H. Eisaki, M. Z. Hasan

    Research output: Contribution to journalArticle

    Abstract

    Inelastic resonant X-ray scattering is carried out on SrCuO2, a model quasi one-dimensional spin 1/2 Mott insulator. Tuning excitation energy to a previously unstudied resonance allows insight into the effect of the intermediate state coupling to the fundamental charge modes exhibited by the sample. Redistribution of momentum and energy resolved spectral weight at the new resonance permits identification of features resembling the strong coupling prediction for the modes. Despite expected resonance enhancement, no spinon-like modes are observed above 0.5 eV (two-spinon threshold) in the measured scattering spectra.

    Original languageEnglish (US)
    Pages (from-to)460-461
    Number of pages2
    JournalPhysica C: Superconductivity and its Applications
    Volume460-462 I
    Issue numberSPEC. ISS.
    DOIs
    StatePublished - Sep 1 2007

    Fingerprint

    insulators
    Excitation energy
    X ray scattering
    scattering
    Momentum
    Tuning
    tuning
    Scattering
    momentum
    thresholds
    energy
    augmentation
    predictions
    excitation
    x rays

    Keywords

    • Mott insulators
    • Parent cuprates
    • Spin-charge separation
    • Superconductivity

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Wray, L., Qian, D., Li, Y. W., Eisaki, H., & Hasan, M. Z. (2007). Collective charge modes in quasi-1D Mott insulator SrCuO2 . Physica C: Superconductivity and its Applications, 460-462 I(SPEC. ISS.), 460-461. https://doi.org/10.1016/j.physc.2007.03.291

    Collective charge modes in quasi-1D Mott insulator SrCuO2 . / Wray, L.; Qian, D.; Li, Y. W.; Eisaki, H.; Hasan, M. Z.

    In: Physica C: Superconductivity and its Applications, Vol. 460-462 I, No. SPEC. ISS., 01.09.2007, p. 460-461.

    Research output: Contribution to journalArticle

    Wray, L, Qian, D, Li, YW, Eisaki, H & Hasan, MZ 2007, 'Collective charge modes in quasi-1D Mott insulator SrCuO2 ', Physica C: Superconductivity and its Applications, vol. 460-462 I, no. SPEC. ISS., pp. 460-461. https://doi.org/10.1016/j.physc.2007.03.291
    Wray, L. ; Qian, D. ; Li, Y. W. ; Eisaki, H. ; Hasan, M. Z. / Collective charge modes in quasi-1D Mott insulator SrCuO2 . In: Physica C: Superconductivity and its Applications. 2007 ; Vol. 460-462 I, No. SPEC. ISS. pp. 460-461.
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