Fig. 2From: Raman tensor of layered black phosphorusARP Raman scattering spectra of BP for (a)-(d) basal planes and (e)-(h) cross planes. ARP Raman scattering intensities are fitted with Eq. (4) and (6), and the phase differences between Raman tensor elements a and c, that is the ϕac, of \( {A}_g^1 \) and \( {A}_g^2 \) modes are 42° and 79° for basal plane. For cross plane, the phase differences between Raman tensor elements b and c of \( {A}_g^1 \) and \( {A}_g^2 \) modes are 0° and 50° respectivelyBack to article page