′�?, which has a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption of your 295 cm−one phonon corresponds towards the crystal IR absorption edge, as opposed to the residual absorption peak. Density functional principle computations present which the residual absorption in the https://baga4se7-crystal51504.tokka-blog.com/32972831/everything-about-baga4se7-crystal