Degenerate and chiral states in the extended Heisenberg model on the kagome lattice

We present a study of the low-temperature phases of the antiferromagnetic extended classical Heisenberg model on the kagome lattice, up to third-nearest neighbors. First, we focus on the degenerate lines in the boundaries of the well-known staggered chiral phases. These boundaries have either semiex...

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Autores principales: Gómez Albarracín, Flavia Alejandra, Pujol, Pierre
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2018
Materias:
Física
Ciencias Exactas
antiferromagnetic extended classical Heisenberg model
staggered chiral phases
thermal fluctuations
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/139619
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-139619
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Ciencias Exactas
antiferromagnetic extended classical Heisenberg model
staggered chiral phases
thermal fluctuations
spellingShingle Física
Ciencias Exactas
antiferromagnetic extended classical Heisenberg model
staggered chiral phases
thermal fluctuations
Gómez Albarracín, Flavia Alejandra
Pujol, Pierre
Degenerate and chiral states in the extended Heisenberg model on the kagome lattice
topic_facet Física
Ciencias Exactas
antiferromagnetic extended classical Heisenberg model
staggered chiral phases
thermal fluctuations
description We present a study of the low-temperature phases of the antiferromagnetic extended classical Heisenberg model on the kagome lattice, up to third-nearest neighbors. First, we focus on the degenerate lines in the boundaries of the well-known staggered chiral phases. These boundaries have either semiextensive or extensive degeneracy, and we discuss the partial selection of states by thermal fluctuations. Then, we study the model under an external magnetic field on these lines and in the staggered chiral phases. We pay particular attention to the highly frustrated point, where the three exchange couplings are equal. We show that this point can be mapped to a model with spin-liquid behavior and nonzero chirality. Finally, we explore the effect of Dzyaloshinskii-Moriya (DM) interactions in two ways: a homogeneous and a staggered DM interaction. In both cases, there is a rich low-temperature phase diagram, with different spontaneously broken symmetries and nontrivial chiral phases.
format Articulo
Preprint
author Gómez Albarracín, Flavia Alejandra
Pujol, Pierre
author_facet Gómez Albarracín, Flavia Alejandra
Pujol, Pierre
author_sort Gómez Albarracín, Flavia Alejandra
title Degenerate and chiral states in the extended Heisenberg model on the kagome lattice
title_short Degenerate and chiral states in the extended Heisenberg model on the kagome lattice
title_full Degenerate and chiral states in the extended Heisenberg model on the kagome lattice
title_fullStr Degenerate and chiral states in the extended Heisenberg model on the kagome lattice
title_full_unstemmed Degenerate and chiral states in the extended Heisenberg model on the kagome lattice
title_sort degenerate and chiral states in the extended heisenberg model on the kagome lattice
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/139619
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AT pujolpierre degenerateandchiralstatesintheextendedheisenbergmodelonthekagomelattice
bdutipo_str Repositorios
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