Abstract
The magnetization of the easy-plane quasi-one-dimensional antiferromagnets CsMn and RbMn in the presence of an external magnetic field can be well interpreted by minimizing the classical magnetic energy. However, this type of calculation cannot reproduce the observed anisotropy of the magnetization at high magnetic fields, which therefore is usually attributed to quantum effects. We show that the anisotropy is already present at the classical level, provided thermal fluctuations are taken into account.
- Received 25 January 1996
DOI:https://doi.org/10.1103/PhysRevB.54.6327
©1996 American Physical Society