Fig. 1From: Raman tensor of layered black phosphorusSchematic of ARP Raman scattering of basal and cross planes of BP. a ARP Raman scattering of basal plane. θ is the angle between polarization direction of excitation light and c axis. b APR scattering of cross plane. φ is the angle between polarization direction of excitation light and b axis. c and d denote representative Raman spectra of basal and cross planesBack to article page