Raman Optical Activity of 1T-TaS2

• DOI: 10.1021/acs.nanolett.1c04990
• Publication Date: 2022-04-03T16:45:35Z
• Authors: Ewa M. Lacinska; Magdalena Furman; Johannes Binder; Iaroslav Lutsyk; Pawel J. Kowalczyk; Roman Stepniewski; Andrzej Wysmolek
• Keywords: Raman optical activity; Opacity; Optical Rotation

Measurements of optical activity can be readily performed in transparent matter by means a rotation transmitted light polarization. In the case opaque bulk materials, such measurements cannot performed, making it difficult to assess possible chiral properties. this work, we present full angular polarization dependencies Raman modes 1T-TaS2, which has recently been suggested have properties after pulsed laser excitation. We found that mechanical sample does not alter polarization-resolved spectra, only explained introducing an antisymmetric tensor, frequently used describe (ROA). spectra obtained under circularly polarized excitation demonstrate 1T-TaS2 indeed shows ROA, providing strong evidence is conditions Our results suggest ROA may as universal tool study quantum materials.