′�?, which has a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−one phonon corresponds into the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful theory computations clearly show that the residual absorption on the https://baga4se7-crystal95184.idblogmaker.com/31995778/rumored-buzz-on-baga4se7-crystal