Phonons and superconductivity in Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8

Journal Article · Mon Oct 12 04:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.69.2272· OSTI ID:7203725

Mook, H A; Chakoumakos, B C; Mostoller, M ^[1]; Boothroyd, A T; Paul, D M ^[2]

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1. Oak Ridge National Laboratory, Solid State Division, P. O. Box 2008, Oak Ridge, Tennessee 37830 (United States)
2. Department of Physics, University of Warwick, Coventry CV47AL (United Kingdom)

Detailed neutron scattering measurements have been made for selected phonons for Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8}. The temperature dependence of the linewidths indicates large anharmonic effects particularly for the oxygen modes. The superconductivity induced change in width below {ital T}{sub {ital c}} of the two highest energy oxygen modes is found to be nearly 2% of the phonon energy suggesting a large electron phonon coupling.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7203725
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:15; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
COUPLING
DISPERSION RELATIONS
ELECTRON-PHONON COUPLING
HIGH-TC SUPERCONDUCTORS
LINE WIDTHS
NEUTRON PROBES
OXIDES
OXYGEN COMPOUNDS
PHONONS
PROBES
QUASI PARTICLES
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS