′�?, having a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−one phonon corresponds into the crystal IR absorption edge, as an alternative to the residual absorption peak. Density functional concept computations exhibit the residual absorption in the BGSe https://baga4se7crystal57902.losblogos.com/31689165/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing