Beats of quantum oscillations of the hall coefficient and resistivity in semiconductor alloys n-Bi _0.93Sb _0.07 at a small deviation of the magnetic field direction from the trigonal axis

Quantum oscillations of the resistivity ρ ₂₂ and Hall coefficient R _12.3 in the semiconductor alloy n-Bi _{0. 93}Sb _{0. 07} have been studied at H {norm of matrix} C ₃ and j {norm of matrix} C ₁ in magnetic fields to 14 T and at temperatures of 1.5, 4.5, 10, and 20 K. At temperatures of 1.5 and 4.5 K, beats of quantum oscillations of ρ ₂₂ and R _{12. 3} due to a small deviation of the magnetic field H from the crystallographic C ₃ axis have been observed. To determine the oscillation period Δ _i, cyclotron mass m _ci, cyclotron frequency ω _ci, and extreme section S _extri, experimentally measured quantum oscillation beats have been compared with the model beats of oscillations of three harmonic functions, two of which have close frequencies. The deviation of the parameters Δ _i, m _ci, and S _extri from the same parameters when the magnetic field H exactly coincides with the trigonal C ₃ axis has made it possible to estimate the magnetic field H deflection angle from the trigonal C ₃ axis, which is ~1°.