Energy spectrum of electrons (holes) doped into a two-dimensional antiferromagnetic insulator is quantized in an external magnetic field of arbitrary direction. A peculiar dependence of de Haas-van Alphen (dHvA) or Shubnikov-de Haas (SdH) magneto-oscillation amplitudes on the azimuthal in-plane angle from the magnetization direction and on the polar angle from the out-of-plane direction is found, which can be used as a sensitive probe of the antiferromagnetic order in doped Mott-Hubbard, spin-density wave (SDW), and conventional band-structure insulators.
@article{arxiv.0802.0128,
title = {Magnetic quantum oscillations in doped antiferromagnetic insulators},
author = {V. V. Kabanov and A. S. Alexandrov},
journal= {arXiv preprint arXiv:0802.0128},
year = {2009}
}