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Thermodynamics of the classical spin-ice model with nearest neighbour interactions using the Wang-Landau algorithm

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Grigera_2016_TEPJB_Thermo_CCBY.pdf (547.2Kb)
Date
22/02/2016
Author
Ferreyra, M.V.
Giordano, G.
Borzi, R.A.
Betouras, J.J.
Grigera, Santiago Andres
Keywords
QA Mathematics
QB Astronomy
QC Physics
NDAS
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Abstract
In this article we study the classical nearest-neighbour spin-ice model (nnSI) by means of Monte Carlo simulations, using the Wang-Landau algorithm. The nnSI describes several of the salient features of the spin-ice materials. Despite its simplicity it exhibits a remarkably rich behaviour. The model has been studied using a variety of techniques, thus it serves as an ideal benchmark to test the capabilities of the Wang Landau algorithm in magnetically frustrated systems. We study in detail the residual entropy of the nnSI and, by introducing an applied magnetic field in two different crystallographic directions ([111] and [100],) we explore the physics of the kagome-ice phase, the transition to full polarisation, and the three dimensional Kasteleyn transition. In the latter case, we discuss how additional constraints can be added to the Hamiltonian, by taking into account a selective choice of states in the partition function and, then, show how this choice leads to the realization of the ideal Kasteleyn transition in the system.
Citation
Ferreyra , M V , Giordano , G , Borzi , R A , Betouras , J J & Grigera , S A 2016 , ' Thermodynamics of the classical spin-ice model with nearest neighbour interactions using the Wang-Landau algorithm ' , The European Physical Journal B - Condensed Matter and Complex Systems , vol. 89 , no. 2 . https://doi.org/10.1140/epjb/e2016-60781-7
Publication
The European Physical Journal B - Condensed Matter and Complex Systems
Status
Peer reviewed
DOI
https://doi.org/10.1140/epjb/e2016-60781-7
ISSN
1434-6028
Type
Journal article
Rights
The Author(s) 2016. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Description
This work was supported by Consejo Nacional de Investigaciones Científcas y Técnicas (CONICET), Agencia Nacional de Promoción Científca y Tecnológica (ANPCyT), Argentina and the Helmholtz Virtual Institute\New states of matter and their excitations", Germany.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/8364

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