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Low-Temperature Phonon Anomalies in Cuprates

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Stripes and Related Phenomena

Part of the book series: Selected Topics in Superconductivity ((STIS,volume 8))

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Abstract

Our inelastic neutron scattering measurement on La185Sr15CuO4 single crystals shows that the in-plane LO phonon dispersion at low temperature is incompatible with the current view on the dynamic charge stripes, which for this composition should have the periodicity of 4a. Instead, the results are consistent with the dynamic stripes with the periodicity of 2a, half of what is expected and a quarter of the magnetic periodicity. Calculations with the two-band t-t’-J model suggest that such 2a stripe charge ordering may help hole pairing.

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Author information

Authors and Affiliations

  1. Department of Materials Science and Engineering and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, PA, 19104

    T. Egami

  2. Los Alamos National Laboratory, Los Alamos, NM, 87545

    R. J. McQueeney

  3. Department of Physics and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, PA, 19104

    Y. Petrov

  4. Physics Department, Brookhaven National Laboratory, Upton, NY, 11973

    G. Shirane

  5. Department of Physics, Tohoku University, Sendai, 980, Japan

    Y. Endoh

Authors
  1. T. Egami
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  2. R. J. McQueeney
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  3. Y. Petrov
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  4. G. Shirane
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  5. Y. Endoh
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Editor information

Editors and Affiliations

  1. Università di Roma “La Sapienza”, Rome, Italy

    Antonio Bianconi

  2. Istituto Nazionale di Fisica Della Materia, Rome, Italy

    Naurang L. Saini

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© 2002 Kluwer Academic Plenum Publishers

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Egami, T., McQueeney, R.J., Petrov, Y., Shirane, G., Endoh, Y. (2002). Low-Temperature Phonon Anomalies in Cuprates. In: Bianconi, A., Saini, N.L. (eds) Stripes and Related Phenomena. Selected Topics in Superconductivity, vol 8. Springer, Boston, MA. https://doi.org/10.1007/0-306-47100-0_23

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  • DOI: https://doi.org/10.1007/0-306-47100-0_23

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-0-306-46419-5

  • Online ISBN: 978-0-306-47100-1

  • eBook Packages: Springer Book Archive

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