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Proceedings Paper

Fano electron-phonon effects in the far-infrared properties of high-Tc superconductors
Author(s): E. A. Kafadaryan
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Paper Abstract

We present loss-energy spectra, Im ε -1Ω ), calculated by use Kramers- Kronig transformation to the far-infrared reflectivity spectra of the superconducting YBa2Cu3O7-x, Bi4Sr4CaCu3O14+x, Bi2Sr2CaCu2O8+x a-axis oriented textures in a frequency range 50 - 700 cm-1 at temperatures 20 - 300 K, focusing on the phonon properties in the undoped structures. Fano-like antiresonance minima near 300 cm-1 has been observed in a-axis oriented textures well below Tc and analyzed by Fano configuration interaction theory as result of interference between the B2u (B1g) plane- oxygen mode and low-energy charge continua that arises from electronic excitations on the Fermi surface.

Paper Details

Date Published: 28 December 1999
PDF: 4 pages
Proc. SPIE 4060, New Trends in Atomic and Molecular Spectroscopy, (28 December 1999); doi: 10.1117/12.375284
Show Author Affiliations
E. A. Kafadaryan, Institute for Physical Research (Armenia)

Published in SPIE Proceedings Vol. 4060:
New Trends in Atomic and Molecular Spectroscopy
Gagik G. Gurzadyan; Artashes V. Karmenyan, Editor(s)

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