Raman scattering by a nested Fermi surface

Journal Article · Mon Sep 16 04:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.1657· OSTI ID:5293285

Virosztek, A ^[1]; Ruvalds, J ^[2]

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1. Central Research Institute for Physics, POB 49, H-1525 Budapest 114 (Hungary)
2. Department of Physics, University of Virginia, Charlottesville, Virginia (USA)

Light coupling to energy fluctuations in a nonparabolic conduction band is found to yield a smooth Raman spectrum extending to an energy of 1 eV in the case of intermediate electron-electron scattering between nearly parallel nested'' sections of the Fermi surface. Nesting creates a frequency-dependent damping that produces a Raman line shape which exhibits a surprising proportionality to the optical conductivity. Evidence for the anomalous scattering is found in data on the high-temperature superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} and in some rare-earth metals.

• DOE Contract Number: FG05-84ER45113
• OSTI ID: 5293285
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:12; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360206* -- Ceramics
Cermets
& Refractories-- Radiation Effects
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
CUPRATES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
ENERGY LEVELS
FERMI LEVEL
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
PHOTOCONDUCTIVITY
PHYSICAL PROPERTIES
RAMAN SPECTRA
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
STRUCTURE FACTORS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS