Resonant inelastic x-ray scattering study of holon-antiholon continuum in SrCuO2

We report a resonant inelastic x-ray scattering study of charge excitations in the quasi-one-dimensional Mott insulator SrCuO2. We observe a continuum of low-energy excitations, in which a highly dispersive feature with a large sinusoidal dispersion (~1.1 eV) resides. We have also measured the optic...

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Bibliographic Details
Published inarXiv.org
Main Authors Young-June, Kim, Hill, J P, Benthien, H, Essler, F H L, Jeckelmann, E, Choi, H S, Noh, T W, Motoyama, N, Kojima, K M, Uchida, S, Casa, D, Gog, T
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 23.01.2004
Subjects
Dispersion
Dynamic response
Excitation spectra
Excitons
Inelastic scattering
Strontium copper oxide
X-ray scattering
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Summary:We report a resonant inelastic x-ray scattering study of charge excitations in the quasi-one-dimensional Mott insulator SrCuO2. We observe a continuum of low-energy excitations, in which a highly dispersive feature with a large sinusoidal dispersion (~1.1 eV) resides. We have also measured the optical conductivity, and studied the dynamic response of the extended Hubbard model with realistic parameters, using a dynamical density-matrix renormalization group method. In contrast to earlier work, we do not find a long-lived exciton, but rather these results suggest that the excitation spectrum comprises a holon-antiholon continuum together with a broad resonance.
ISSN:2331-8422
DOI:10.48550/arxiv.0307497