′�?, which has a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The 2-phonon absorption of your 295 cm−one phonon corresponds into the crystal IR absorption edge, rather then the residual absorption peak. Density practical concept computations exhibit the residual absorption of your BGSe crystal https://baga4se7crystal31840.nizarblog.com/32792129/a-simple-key-for-baga4se7-crystal-unveiled