′�?, which has a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather than the residual absorption peak. Density purposeful principle computations show which the residual absorption with the BGSe https://mylesxysmd.ampblogs.com/baga4se7-crystal-can-be-fun-for-anyone-69499762