Wide and asymmetric oxygen bond-stretching phonons in La{sub 1.85}Sr{sub 0.15}CuO{sub 4}
Abstract
An inelastic-neutron-scattering study performed on a single crystal of superconducting La{sub 1.85}Sr{sub 0.15}CuO{sub 4} reveals that the highest longitudinal phonon mode at wave vector ({pi},0) (planar oxygen bond-stretching mode), of which the frequency is strongly affected by hole doping, has a very wide and asymmetric line shape. This line shape is considered anomalous and cannot be explained by normal electron-phonon coupling (Fermi surface nesting) or a macroscopic inhomogeneous hole distribution. {copyright} {ital 1996 The American Physical Society.}
- Authors:
-
- Department of Physics and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
- Department of Materials Science and Engineering and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
- Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Department of Physics, Tohoku University, Sendai 980 (Japan)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- OSTI Identifier:
- 390390
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review, B: Condensed Matter
- Additional Journal Information:
- Journal Volume: 54; Journal Issue: 14; Other Information: PBD: Oct 1996
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 66 PHYSICS; HIGH-TC SUPERCONDUCTORS; LATTICE VIBRATIONS; LANTHANUM OXIDES; STRONTIUM OXIDES; COPPER OXIDES; QUATERNARY COMPOUNDS; MONOCRYSTALS; NEUTRON DIFFRACTION; INELASTIC SCATTERING
Citation Formats
McQueeney, R J, Egami, T, Shirane, G, and Endoh, Y. Wide and asymmetric oxygen bond-stretching phonons in La{sub 1.85}Sr{sub 0.15}CuO{sub 4}. United States: N. p., 1996.
Web. doi:10.1103/PhysRevB.54.R9689.
McQueeney, R J, Egami, T, Shirane, G, & Endoh, Y. Wide and asymmetric oxygen bond-stretching phonons in La{sub 1.85}Sr{sub 0.15}CuO{sub 4}. United States. https://doi.org/10.1103/PhysRevB.54.R9689
McQueeney, R J, Egami, T, Shirane, G, and Endoh, Y. 1996.
"Wide and asymmetric oxygen bond-stretching phonons in La{sub 1.85}Sr{sub 0.15}CuO{sub 4}". United States. https://doi.org/10.1103/PhysRevB.54.R9689.
@article{osti_390390,
title = {Wide and asymmetric oxygen bond-stretching phonons in La{sub 1.85}Sr{sub 0.15}CuO{sub 4}},
author = {McQueeney, R J and Egami, T and Shirane, G and Endoh, Y},
abstractNote = {An inelastic-neutron-scattering study performed on a single crystal of superconducting La{sub 1.85}Sr{sub 0.15}CuO{sub 4} reveals that the highest longitudinal phonon mode at wave vector ({pi},0) (planar oxygen bond-stretching mode), of which the frequency is strongly affected by hole doping, has a very wide and asymmetric line shape. This line shape is considered anomalous and cannot be explained by normal electron-phonon coupling (Fermi surface nesting) or a macroscopic inhomogeneous hole distribution. {copyright} {ital 1996 The American Physical Society.}},
doi = {10.1103/PhysRevB.54.R9689},
url = {https://www.osti.gov/biblio/390390},
journal = {Physical Review, B: Condensed Matter},
number = 14,
volume = 54,
place = {United States},
year = {Tue Oct 01 00:00:00 EDT 1996},
month = {Tue Oct 01 00:00:00 EDT 1996}
}
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