′�?, with a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The two-phonon absorption with the 295 cm−one phonon corresponds for the crystal IR absorption edge, in lieu of the residual absorption peak. Density functional principle computations clearly show the residual absorption of your BGSe https://baga4se7crystal31851.webdesign96.com/33182349/the-smart-trick-of-baga4se7-crystal-that-no-one-is-discussing