Phonon-Phonon Interactions in the Polarization Dependence of Raman Scattering.

ABSTRACT: We have found that the polarization dependence of Raman scattering in organic crystals at finite temperatures can only be described by a fourth-rank tensor formalism. This generalization of the second-rank Raman tensor stems from the effect of off-diagonal components in the crystal self-energy on the light scattering mechanism. We thus establish a novel manifestation of phonon-phonon interaction in inelastic light scattering, markedly separate from the better-known phonon lifetime.

SUBMITTER: Benshalom N 

PROVIDER: S-EPMC10510386 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature