′�?, by using a frequency of 295 cm−1, is attributed to your stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−1 phonon corresponds for the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical theory computations display which the residual absorption of https://baga4se7crystal86295.bcbloggers.com/32039919/baga4se7-crystal-fundamentals-explained