Lattice and Charge Effects in High-Temperature Superconductors

Author

Takeshi Egami
R. J. McQueeney
Jaeho Chung
Mohana Yethiraj
Herbert A. Mook
Masatoshi Arai
Yasuhiro Inamura
Yasuo Endoh
Setsuko Tajima
Christopher D. Frost
Fatih Dogan, Missouri University of Science and TechnologyFollow

Abstract

We present the results of inelastic neutron-scattering measurements of a twinned crystal of YBa₂Cu₃O_6.95 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.

Recommended Citation

T. Egami and R. J. McQueeney and J. Chung and M. Yethiraj and H. A. Mook and M. Arai and Y. Inamura and Y. Endoh and S. Tajima and C. D. Frost and F. Dogan, "Lattice and Charge Effects in High-Temperature Superconductors," Applied Physics A: Materials Science and Processing, vol. 74, no. SUPPL.II, pp. S1635 - S1637, Springer Heidelberg, Dec 2002.

The definitive version is available at https://doi.org/10.1007/s003390201933

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)

0947-8396

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2002 Springer Heidelberg, All rights reserved.

Publication Date

01 Dec 2002