′�?, that has a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−one phonon corresponds towards the crystal IR absorption edge, instead of the residual absorption peak. Density purposeful concept computations display which the residual absorption in the BGSe https://baga4se7crystal84838.blogsvila.com/32861722/a-secret-weapon-for-baga4se7-crystal