Theoretical calculation of optical properties of Y-Ba-Cu-O superconductors

1 November 1987

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 36 (13) , 7203-7206
https://doi.org/10.1103/physrevb.36.7203

Abstract

The optical properties of orthorhombic Y

{Ba}_{2}

{Cu}_{3}

O_{7}

crystal are studied by a first-principles method. The interband optical conductivity shows strong directional anisotropy in the 0-3.0 eV range. A plasmon energy of 2.8 eV is predicted. Analysis of the static dielectric constant in the case of a semiconductorlike band structure supports the excitonic-enhanced superconducting mechanism in the Y-Ba-Cu-O system.

Keywords

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