′�?, that has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption of your 295 cm−one phonon corresponds towards the crystal IR absorption edge, instead of the residual absorption peak. Density purposeful principle computations display which the residual absorption with the BGSe https://hectorzfgii.fitnell.com/73598994/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing