Anomalous Raman scattering in layered AgCrP${}_2$Se${}_6$: Helical modes and excitation energy-dependent intensities

Rahul Rao, Jie Jiang, Ruth Pachter +9

Structural anisotropy in layered two-dimensional materials can lead to highly anisotropic optical absorption which, in turn, can profoundly a^ect their phonon modes. These e^ects i…