RAMAN-SCATTERING IN ORGANIC SUPERCONDUCTOR (BEDT-TTF)2I3 - A MODEL STUDY

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.