′�?, by using a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful theory computations show that the residual absorption of your BGSe https://israelvcejg.jts-blog.com/31724870/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing