′�?, that has a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−one phonon corresponds for the crystal IR absorption edge, as opposed to the residual absorption peak. Density functional principle computations show the residual absorption of your BGSe https://baga4se7-crystal96172.ttblogs.com/12446056/the-smart-trick-of-baga4se7-crystal-that-no-one-is-discussing