Magnetic order and spin fluctuations in low-dimensional insulating systems
Strongly Correlated Electrons
2007-09-18 v1
Abstract
The current theoretical and experimental situations are reviewed for low-dimensional insulating systems with a low magnetic transition temperature TM and pronounced short-range magnetic order above this temperature. Both the standard and self-consistent spin-wave theories are shown to be insufficient to quantitatively describe the experimental data on these systems. Field-theoretical approaches taking into account the contribution of the spin-fluctuation excitations (neglected in the spin-wave theories) to the thermodynamic properties of ferro- and antiferromagnets are discussed.
Cite
@article{arxiv.0709.2690,
title = {Magnetic order and spin fluctuations in low-dimensional insulating systems},
author = {A A Katanin and V Yu Irkhin},
journal= {arXiv preprint arXiv:0709.2690},
year = {2007}
}
Comments
This is the russian version of the paper; the english version can be accessed from the DOI link below or requested from the authors