Inelastic light scattering enhancement near an electronic excitation at 2 eV in La/sub 2/CuO/sub 4+/ital y//

Journal Article · Tue Aug 01 00:00:00 EDT 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.40.2225· OSTI ID:5917857

Ohana, I; Heiman, D; Dresselhaus, M S; Picone, P J

A strong polarization-sensitive resonant enhancement of selected Raman lines is observed in single-crystal La/sub 2/CuO/sub 4+/ital y// near a 2-eV electronic excitation at room temperature. Structure in the electronic excitation spectra as narrow as 50 meV is resolved with this technique. The resonance phenomena are only observed for light polarized parallel to the Cu-O layers and are generally quenched upon the addition of excess oxygen.

• Research Organization: Center for Materials Science and Engineering and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (US); Francis Bitter National Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139; Center for Materials Science and Engineering, Department of Electrical Engineering, and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 5917857
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 40:4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
RAMAN SPECTRA
LANTHANUM OXIDES
ELECTRONIC STRUCTURE
ENERGY RESOLUTION
EXCITATION
LIGHT SCATTERING
MONOCRYSTALS
POLARIZATION
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
ENERGY-LEVEL TRANSITIONS
LANTHANUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
RESOLUTION
SCATTERING
SPECTRA
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties