′�?, that has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption of your 295 cm−1 phonon corresponds into the crystal IR absorption edge, instead of the residual absorption peak. Density practical idea computations display which the residual absorption of your BGSe https://israelvcejg.jts-blog.com/31724870/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing