​Dear Prof. Erba,

Thank you for your clear explanation.

Hi,
I am a CRYSTAL23 user. I performed the computation of Raman intensities of some crystals. I wonder how to get the values of the Raman tensor? I read a copy of the TENS_RAMAN.DAT file, but I don't known how these data are defined. I assume that each row corresponds to a phonon mode and the columns are subsequently the xx, xy, xz, yy, yz, and zz componesnts of the Raman tensor, am I right? I found that the computed polarized Raman intensities are consistent with the space group of the crystal, but the Raman tensors are not, given the tensors are all non-zero. Can you please tell me how to get the data of Raman tensor from the output and tell me the unit of the Raman tensor CRYSTL23 used? Thanks a lot!