THE SMART TRICK OF BAGA4SE7 CRYSTAL THAT NOBODY IS DISCUSSING

′�?, with a frequency of 295 cm−one, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−one phonon corresponds towards the crystal IR absorption edge, instead of the residual absorption peak. Density functional theory computations clearly show the residual absorption in the BGSe crystal or