Spin stiffness and quantum fluctuations in C-type and A-type antiferromagnets

@inproceedings{Raczkowski2002SpinSA,
  title={Spin stiffness and quantum fluctuations in C-type and A-type antiferromagnets},
  author={Marcin Raczkowski and Andrzej M. Ole's},
  year={2002}
}
We present a systematic study of quantum fluctuations in the C-type and A-type antiferromagnetic (AF) phases in cubic lattices and in bilayer systems. Using the linear spin-wave theory, we show that the spin stiffness and the quantum corrections to the order parameter and energy obtained for C-AF and A-AF phases decrease with the increasing number of ferromagnetic bonds. Therefore, the quantum spin effects in ${\mathrm{LaMnO}}_{3}$ and in ${\mathrm{LaVO}}_{3}$ are rather small, suggesting the… CONTINUE READING