′�?, having a frequency of 295 cm−1, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−1 phonon corresponds into the crystal IR absorption edge, rather then the residual absorption peak. Density useful theory computations show the residual absorption from the BGSe crystal originates https://baga4se7-crystal83813.develop-blog.com/39531826/details-fiction-and-baga4se7-crystal