′�?, by using a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−one phonon corresponds on the crystal IR absorption edge, as opposed to the residual absorption peak. Density functional idea computations clearly show which the residual absorption in https://baga4se7crystal73234.theideasblog.com/33204917/rumored-buzz-on-baga4se7-crystal