Lattice dynamical studies of HTSC materials

A survey is presented on recent progress in the understanding of the lattice dynamics in Nd 2CuO 4, (La,Sr) 2CuO 4 and YBa 2Cu 3O 6 7 . Classical anharmonicity and twinning were found to be major complications for the interpretation of the data. The lattice vibrations of the cuprates can now largely...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1991-12, Vol.185, p.156-161
Main Authors: Pintschovius, L., Pyka, N., Reichardt, W., Rumiantsev, A.Yu, Mitrofanov, N.L., Ivanov, A.S., Collin, G., Bourges, P.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Lattice dynamics
Phonon states and bands, normal modes, and phonon dispersion
Phonons and vibrations in crystal lattices
Physics
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Summary:A survey is presented on recent progress in the understanding of the lattice dynamics in Nd 2CuO 4, (La,Sr) 2CuO 4 and YBa 2Cu 3O 6 7 . Classical anharmonicity and twinning were found to be major complications for the interpretation of the data. The lattice vibrations of the cuprates can now largely be described within the framework of shell models for strongly ionic compounds. Phonon anomalies inferred from a comparison of doped and undoped compounds resemble those found in classical superconductors.
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(91)91965-7