Specific features of quantum oscillations of magnetization in quasi-two-dimensional antiferromagnetic semimetals

The specific features of quantum oscillations of the magnetization in quasi-two-dimensional wide-band-gap antiferromagnetic semimetals with a low concentration of charge carriers have been considered theoretically. It has been shown that, in these systems, the Fermi energy determined from the analysis of the frequency of the de Haas–van Alphen oscillations according to the standard procedure can differ significantly from the true value. For the correct determination of the Fermi energy in the canted phase, it has been proposed to analyze quantum oscillations of the magnetization $M$ not as a function of the inverse magnetic field 1/$H$, but as a function of 1/$\cos\gamma$, where the angle $\gamma$ characterizes the inclination angle of the magnetic field with respect to the plane of the quasi-two-dimensional semimetal.