DETAILED NOTES ON BAGA4SE7 CRYSTAL

′�?, using a frequency of 295 cm−1, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds on the crystal IR absorption edge, instead of the residual absorption peak. Density functional theory computations exhibit the residual absorption from the BGSe crystal originates from th