Fröhlich-interaction induced one-phonon Raman scattering in La 2CuO 4 using an infrared laser

The room-temperature Raman scattering from La 2CuO 4 is measured using a Fourier-transform spectrometer with an infrared laser. Due to the low energy of the laser, neither the two-magnon, nor the two-phonon scattering is observed, but a strong resonant one-phonon scattering is obtained. The seven pe...

Full description

Saved in:
Bibliographic Details
Published inSolid state communications Vol. 112; no. 6; pp. 315 - 318
Main Authors Lin, Y, Eldridge, J.E, Sichelschmidt, J, Cheong, S.-W, Wahlbrink, T
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1999
Subjects
A. High- Tc superconductors
D. Electron–phonon interactions
D. Phonons
E. Inelastic light scattering
D. Electron–phonon interactions
E. Inelastic light scattering
A. High- T c superconductors
D. Phonons
Online AccessGet full text

Cover

More Information
Summary:The room-temperature Raman scattering from La 2CuO 4 is measured using a Fourier-transform spectrometer with an infrared laser. Due to the low energy of the laser, neither the two-magnon, nor the two-phonon scattering is observed, but a strong resonant one-phonon scattering is obtained. The seven peak frequencies correspond to longitudinal optic (LO) phonons with both E u and A 2u symmetry. The peaks correspond to phonons approximately halfway across the Brillouin zone, indicating a violation of wavevector conservation.
ISSN:0038-1098
1879-2766
DOI:10.1016/S0038-1098(99)00366-X