Sn. Behera et H. Ghosh, RAMAN-SCATTERING IN ORGANIC SUPERCONDUCTOR (BEDT-TTF)2I3 - A MODEL STUDY, Zeitschrift fur Physik. B, Condensed matter, 95(3), 1994, pp. 275-280
An interpretation of the Raman data of the organic superconductor (BED
T-TTF)2I3 is given, based on the modified charge bag model for superco
nductivity. The Raman intensities are calculated at zero temperature b
oth in the normal as well as the superconducting (SC) states. The scat
tering due to charge carriers as well as the phonons are taken into ac
count. The results show a constant intensity background which reduces
on going from the normal to the superconducting state. Similarly, the
loss of intensity, broadening and softening of the frequency of a low
lying phonon on going from the normal to the SC state are predicted. A
ll these features are in qualitative agreement with the observed Raman
data.