Optical investigation of the band structure of GaSb
The reflectivity of GaSb has been measured for photon energies between 0·5 and 5 ev. A structure similar to the one observed for the reflectivity of germanium has been seen. Reflectivity maxima occur at 1·95, 2·47 and 4·3 ev, which can be associated with the same mechanisms producing similar structure in germanium. Thus, a further proof of the close similarity of the band structures of Germanium and GaSb has been obtained.