′�?, having a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−one phonon corresponds to the crystal IR absorption edge, rather than the residual absorption peak. Density practical theory computations show the residual absorption of the BGSe crystal originates https://damienekmmk.losblogos.com/31937969/details-fiction-and-baga4se7-crystal