The dispersion relations of plasmons in a simplified system of CuO2 layers and Cu−O chains View Full Text


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Article Info

DATE

1992-10

AUTHORS

Shiow-Fon Tsay, Shou-Yih Wang, T. J. Watson Yang

ABSTRACT

A simplified model for YBa2Cu3O7 system composed of CuO2 layers and Cu−O chains has been calculated with the long range effect of the all-neighbors Coulombice-e interactions taken into consideration. Dispersion relations have been worked out and discussed. The most striking consequence from the all-neighbors interaction is that the plasmons have, in the long wavelength limit, in addition to the usual vanishingly small two-dimensional acoustic plasmon energies which result from only nearest neighbor interactions, a non-zeroωP* consistent with the bulk plasma frequency of a three dimensional system. The data of an optical reflectance from an EELS experiment has been refitted based on calculated results for plasmon dispersion relations in the YBa2Cu3O7 system. More... »

PAGES

255-260

References to SciGraph publications

  • 1990-10. Dielectric function of YBa2Cu3O7-δ between 50 meV and 50 eV in ZEITSCHRIFT FÜR PHYSIK B CONDENSED MATTER
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    http://scigraph.springernature.com/pub.10.1007/bf01470910

    DOI

    http://dx.doi.org/10.1007/bf01470910

    DIMENSIONS

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