Title

Lattice and Charge Effects in High-Temperature Superconductors

Abstract

We present the results of inelastic neutron-scattering measurements of a twinned crystal of YBa2Cu3O6.95 using the MAPS spectrometer of the ISIS facility of the Rutherford-Appleton Laboratory as well as the HFIR of the Oak Ridge National Laboratory. The dispersion of the Cu-O bond-stretching modes indicates a strong dielectric anisotropy within the plane and associated electronic anisotropy, supporting the dynamic stripe model. The results suggest a possibility that phonons play a major role in the mechanism of high-temperature superconductivity.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Anisotropy; Chemical bonds; Crystal lattices; Dielectric properties; Mathematical models; Neutron scattering; Phonons; Superconductivity; Twinning; Yttrium barium copper oxides; Associated electronic anisotropy; charge effects; Dielectric anisotropy; Inelastic neutron scattering; High temperature superconductors

International Standard Serial Number (ISSN)

9478396

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2002 Springer Heidelberg, All rights reserved.


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