Phase competition in frustrated anisotropic antiferromagnet in strong magnetic field
Strongly Correlated Electrons
2021-02-24 v1
Abstract
We discuss theoretically a frustrated Heisenberg antiferromagnet in magnetic field close to the saturation one. It is demonstrated that a small biaxial anisotropy and/or the magnetic dipolar interaction produce a delicate balance between phases with a commensurate canted, incommensurate helical (conical), and fan spin orderings. As a result, different sequences of phase transitions are realized depending on values of these small anisotropic interactions. We derive analytical expressions for critical fields and ground-state energies of the phases which are in a quantitative agreement with our and previous Monte-Carlo simulations.
Keywords
Cite
@article{arxiv.2008.04234,
title = {Phase competition in frustrated anisotropic antiferromagnet in strong magnetic field},
author = {O. I. Utesov and A. V. Syromyatnikov},
journal= {arXiv preprint arXiv:2008.04234},
year = {2021}
}
Comments
10 pages, 2 figures