3 papers
cond-mat.mtrl-sci2026
Raman Optical Activity Induced by Ferroaxial Order in NiTiO
Gakuto Kusuno, Takeshi Hayashida, Takayuki Nagai +4
Raman optical activity (ROA), the dependence of Raman intensity on the circular polarization of incident and scattered light, has traditionally been observed in chiral molecules an…
cond-mat.mtrl-sci2026
Chiral phonons in sixfold chiral CrSi: Raman spectroscopy and first-principles calculations
Gakuto Kusuno, Shingo Kisanuki, Yusuke Kousaka +2
Chiral phonons have been identified in several chiral crystals, primarily in those with trigonal symmetry and threefold screw axes. In this study, chiral phonons in CrSi, a chi…
cond-mat.mtrl-sci2025
Symmetry analysis of cross-circular and parallel-circular Raman optical activity
Hikaru Watanabe, Rikuto Oiwa, Gakuto Kusuno +2
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…