Symmetry analysis of cross-circular and parallel-circular Raman optical activity

TL;DR

This paper analyzes the symmetry properties of cross-circular and parallel-circular Raman optical activity using magnetic point groups, revealing their potential for diagnosing material symmetries and the relation between Stokes and anti-Stokes processes.

Contribution

It systematically investigates the symmetry of Raman optical activity with magnetic point groups, providing new insights into material symmetry diagnosis and process relations.

Findings

Response allows diagnosis of material symmetry like chirality and axiality.

Stokes and anti-Stokes processes are related by antiunitary symmetry.

Analysis enhances understanding of Raman optical activity symmetry properties.

Abstract

The Raman scattering regarding the circularly-polarized incident and scattered lights is closely related to the circular activity of a given system. We investigate the symmetry of its activity, called the cross-circular and parallel-circular Raman optical activity. The analysis is systematically performed with the magnetic point groups and indicates that the response allows for a useful diagnosis of the symmetry of materials like chirality and (magneto-)axiality. It is also shown that the Stokes and anti-Stokes processes are related to each other by the conserved antiunitary symmetry for the time-reversal operation and that combined with the mirror reflection.