Detection of Saddle Point in Electronic Power Spectrum of Bismuth-Antimony Alloys by Magneto-optical Method

Results of a study of magneto-optical effect in bismuth-antimony alloys are presented. The study consists in the registration of oscillations of transmission of the planar waveguide placed in the magnetic field. The numerical simulation of magneto-optical spectra is conducted within the framework of the modified Baraff model. A complete set of parameters of electronic power spectrum of bismuth in the effective masses tensor approximation is determined. A saddle point in electronic power spectrum of bismuth-antimony alloys is detected with antimony concentrations from 12 to 20 at.%.