THE SMART TRICK OF BAGA4SE7 CRYSTAL THAT NOBODY IS DISCUSSING

′�?, by using a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−one phonon corresponds into the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful principle computations demonstrate the residual absorption in the BGSe crystal