′�?, by using a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The 2-phonon absorption of your 295 cm−one phonon corresponds for the crystal IR absorption edge, as opposed to the residual absorption peak. Density practical theory computations clearly show which the residual absorption on https://sethmcqcn.gynoblog.com/32059335/detailed-notes-on-baga4se7-crystal