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Author McQueeney, R. J. ♦ Petrov, Y. ♦ Egami, T. ♦ Yethiraj, M. ♦ Shirane, G. ♦ Endoh, Y.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ PHYSICS ♦ LANTHANUM OXIDES ♦ STRONTIUM OXIDES ♦ COPPER OXIDES ♦ HIGH-TC SUPERCONDUCTORS ♦ NEUTRON DIFFRACTION ♦ INELASTIC SCATTERING ♦ PHONONS ♦ HFIR REACTOR ♦ CHEMICAL BONDS
Abstract Inelastic neutron scattering measurements of La{sub 1.85} Sr{sub 0.15} CuO{sub 4} show that a discontinuity in dispersion develops in the middle of the highest energy LO phonon branch at low temperatures. The result suggests dynamic short range unit cell doubling in the CuO{sub 2} plane along the direction of the Cu-O bond, such as charge ordering on every other row of oxygen. Such charge ordering is related to, but is different from, the stripe charge ordering observed for nonsuperconducting cuprates. {copyright} {ital 1999} {ital The American Physical Society}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-01-01
Publisher Department Oak Ridge National Laboratory
Publisher Place United States
Journal Physical Review Letters
Volume Number 82
Issue Number 3
Organization Oak Ridge National Laboratory


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