Field-tuned order by disorder in frustrated ising magnets with antiferromagnetic interactions

We demonstrate the appearance of thermal order by disorder in Ising pyrochlores with staggered antiferromagnetic order frustrated by an applied magnetic field. We use a mean-field cluster variational method, a low-temperature expansion, and Monte Carlo simulations to characterize the order-by-disord...

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Detalles Bibliográficos
Autores principales: Guruciaga, P. C., Tarzia, M., Ferreyra, María Victoria, Cugliandolo, L. F., Grigera, Santiago Andrés, Borzi, Rodolfo Alberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Exactas
Física
Antiferromagnetic interactions
Thermal order
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86963
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86963
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Antiferromagnetic interactions
Thermal order
spellingShingle Ciencias Exactas
Física
Antiferromagnetic interactions
Thermal order
Guruciaga, P. C.
Tarzia, M.
Ferreyra, María Victoria
Cugliandolo, L. F.
Grigera, Santiago Andrés
Borzi, Rodolfo Alberto
Field-tuned order by disorder in frustrated ising magnets with antiferromagnetic interactions
topic_facet Ciencias Exactas
Física
Antiferromagnetic interactions
Thermal order
description We demonstrate the appearance of thermal order by disorder in Ising pyrochlores with staggered antiferromagnetic order frustrated by an applied magnetic field. We use a mean-field cluster variational method, a low-temperature expansion, and Monte Carlo simulations to characterize the order-by-disorder transition. By direct evaluation of the density of states, we quantitatively show how a symmetry-broken state is selected by thermal excitations. We discuss the relevance of our results to experiments in 2D and 3D samples and evaluate how anomalous finite-size effects could be exploited to detect this phenomenon experimentally in two-dimensional artificial systems, or in antiferromagnetic all-in-all-out pyrochlores like Nd<sub>2</sub>Hf<sub>2</sub>O<sub>7</sub> or Nd<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>, for the first time.
format Articulo
Articulo
author Guruciaga, P. C.
Tarzia, M.
Ferreyra, María Victoria
Cugliandolo, L. F.
Grigera, Santiago Andrés
Borzi, Rodolfo Alberto
author_facet Guruciaga, P. C.
Tarzia, M.
Ferreyra, María Victoria
Cugliandolo, L. F.
Grigera, Santiago Andrés
Borzi, Rodolfo Alberto
author_sort Guruciaga, P. C.
title Field-tuned order by disorder in frustrated ising magnets with antiferromagnetic interactions
title_short Field-tuned order by disorder in frustrated ising magnets with antiferromagnetic interactions
title_full Field-tuned order by disorder in frustrated ising magnets with antiferromagnetic interactions
title_fullStr Field-tuned order by disorder in frustrated ising magnets with antiferromagnetic interactions
title_full_unstemmed Field-tuned order by disorder in frustrated ising magnets with antiferromagnetic interactions
title_sort field-tuned order by disorder in frustrated ising magnets with antiferromagnetic interactions
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86963
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AT ferreyramariavictoria fieldtunedorderbydisorderinfrustratedisingmagnetswithantiferromagneticinteractions
AT cugliandololf fieldtunedorderbydisorderinfrustratedisingmagnetswithantiferromagneticinteractions
AT grigerasantiagoandres fieldtunedorderbydisorderinfrustratedisingmagnetswithantiferromagneticinteractions
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bdutipo_str Repositorios
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