Phase diagram of 3D ANNNI model in an effective-field approximation
Statistical Mechanics
2007-05-23 v2
Abstract
An effective-field method for caculation of thermodynamic properties of three-dimensional lattice spin models is developed. It is applied to the ANNNI model on the simple cubic lattice. The phase diagram of the model, consisting of a large number of commensurate phases and of an incommensurate phase, is calculated, confirming the results of previous approaches. The phase transition lines for a number of commensurate structures are localized, and a strong evidence for absence of the direct phase transition between commensurate phases and the disordered phase is found.
Keywords
Cite
@article{arxiv.cond-mat/0308014,
title = {Phase diagram of 3D ANNNI model in an effective-field approximation},
author = {Anton Šurda},
journal= {arXiv preprint arXiv:cond-mat/0308014},
year = {2007}
}
Comments
8 pages, 8 figures, references removed and replaced