′�?, by using a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption of your 295 cm−one phonon corresponds into the crystal IR absorption edge, instead of the residual absorption peak. Density purposeful principle computations display that the residual absorption in the BGSe https://baga4se7crystal68912.ambien-blog.com/39193196/detailed-notes-on-baga4se7-crystal