′�?, having a frequency of 295 cm−1, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption of your 295 cm−one phonon corresponds towards the crystal IR absorption edge, instead of the residual absorption peak. Density functional idea computations demonstrate that the residual absorption of the BGSe crystal https://baga4se7crystal31738.blogoxo.com/32784484/the-smart-trick-of-baga4se7-crystal-that-no-one-is-discussing