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Author McQueeney, R. J. ♦ Egami, T. ♦ Shirane, G. ♦ Endoh, Y.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ HIGH-TC SUPERCONDUCTORS ♦ LATTICE VIBRATIONS ♦ LANTHANUM OXIDES ♦ STRONTIUM OXIDES ♦ COPPER OXIDES ♦ QUATERNARY COMPOUNDS ♦ MONOCRYSTALS ♦ NEUTRON DIFFRACTION ♦ INELASTIC SCATTERING
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.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-10-01
Publisher Department Brookhaven National Lab. (BNL), Upton, NY (United States)
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 54
Issue Number 14
Organization Brookhaven National Lab. (BNL), Upton, NY (United States)


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