Monopole ordered phases in dipolar and nearest-neighbors Ising pyrochlore: From spin ice to the all-in–all-out antiferromagnet
We study Ising pyrochlores by means of Monte Carlo simulations. We cover a set of exchange constants ranging from the frustrated ferromagnetic case (spin-ice) to the fully-ordered “all-in–all-out” antiferromagnet in the dipolar model, reinterpreting the results—as in an ionic system—in terms of a te...
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| Autores principales: | , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2014
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126219 |
| Aporte de: |
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I19-R120-10915-126219 |
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| 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 Ising pyrochlores Monte Carlo simulations spin ice all-in–all-out antiferromagnet |
| spellingShingle |
Ciencias Exactas Física Ising pyrochlores Monte Carlo simulations spin ice all-in–all-out antiferromagnet Guruciaga, P. C. Grigera, Santiago Andrés Borzi, Rodolfo Alberto Monopole ordered phases in dipolar and nearest-neighbors Ising pyrochlore: From spin ice to the all-in–all-out antiferromagnet |
| topic_facet |
Ciencias Exactas Física Ising pyrochlores Monte Carlo simulations spin ice all-in–all-out antiferromagnet |
| description |
We study Ising pyrochlores by means of Monte Carlo simulations. We cover a set of exchange constants ranging from the frustrated ferromagnetic case (spin-ice) to the fully-ordered “all-in–all-out” antiferromagnet in the dipolar model, reinterpreting the results—as in an ionic system—in terms of a temperature vs magnetic charge density phase diagram. In spite of its spin nature and the presence of both double and single nonconserved magnetic charges, the dipolar model gives place to a phase diagram which is quite comparable with those previously obtained for on-lattice systems of electric charges, and on spin ice models with a conserved number of single magnetic charges. The contrast between these systems, to which we add results from the nearest-neighbors model, put forward other features of our phase diagram—notably, a monopole fluid with charge order at high monopole densities that persists up to arbitrarily high temperatures—that can only be explained taking into account construction constraints forced by the underlying spin degrees of freedom. |
| format |
Articulo Articulo |
| author |
Guruciaga, P. C. Grigera, Santiago Andrés Borzi, Rodolfo Alberto |
| author_facet |
Guruciaga, P. C. Grigera, Santiago Andrés Borzi, Rodolfo Alberto |
| author_sort |
Guruciaga, P. C. |
| title |
Monopole ordered phases in dipolar and nearest-neighbors Ising pyrochlore: From spin ice to the all-in–all-out antiferromagnet |
| title_short |
Monopole ordered phases in dipolar and nearest-neighbors Ising pyrochlore: From spin ice to the all-in–all-out antiferromagnet |
| title_full |
Monopole ordered phases in dipolar and nearest-neighbors Ising pyrochlore: From spin ice to the all-in–all-out antiferromagnet |
| title_fullStr |
Monopole ordered phases in dipolar and nearest-neighbors Ising pyrochlore: From spin ice to the all-in–all-out antiferromagnet |
| title_full_unstemmed |
Monopole ordered phases in dipolar and nearest-neighbors Ising pyrochlore: From spin ice to the all-in–all-out antiferromagnet |
| title_sort |
monopole ordered phases in dipolar and nearest-neighbors ising pyrochlore: from spin ice to the all-in–all-out antiferromagnet |
| publishDate |
2014 |
| url |
http://sedici.unlp.edu.ar/handle/10915/126219 |
| work_keys_str_mv |
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Repositorios |
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1764820450204975105 |