| Numéro |
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
|
|
|---|---|---|
| Page(s) | C6-728 - C6-730 | |
| DOI | https://doi.org/10.1051/jphyscol:19816213 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-728-C6-730
DOI: 10.1051/jphyscol:19816213
1 Div. Engineering, Brown University, Providence, RI-02912
2 Department of Physics, Osaka University, Toyonaka, 560 Japan
3 Department of Applied Physics, University of Tokyo, Tokyo, 113 Japan
J. Phys. Colloques 42 (1981) C6-728-C6-730
DOI: 10.1051/jphyscol:19816213
INVESTIGATION OF THE CHARGE DENSITY WAVES IN 2H-TaSe2 BY ONE AND TWO PHONON RAMAN SCATTERING
S. Sugai1, 2, K. Murase2, S. Uchida3 et S. Tanaka31 Div. Engineering, Brown University, Providence, RI-02912
2 Department of Physics, Osaka University, Toyonaka, 560 Japan
3 Department of Applied Physics, University of Tokyo, Tokyo, 113 Japan
Abstract
One and two phonon Raman scattering was investigated in 2H-TaSe2 at the normal and the charge density wave (CDW) phases. The temperature dependence of the generalized susceptibility was obtained from the integrated scattering intensity of the two phonon peaks relating to the Kohn anomaly mode. The temperature dependence of the phonon energies calculated from this susceptibility shows excellent agreement with the experimental data obtained from one phonon Raman scattering in the soft A1g and E2g - modes in the CDW phase and the Kohn anomaly mode in the normal phase.