Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7

Among the frustrated magnetic materials, spin-ice stands out as a particularly interesting system. Residual entropy, freezing and glassiness, Kasteleyn transitions and fractionalization of excitations in three dimensions all stem from a simple classical Hamiltonian. But is the usual spin-ice Hamilto...

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Detalles Bibliográficos
Autores principales:	Borzi, Rodolfo Alberto, Gómez Albarracín, Flavia Alejandra, Rosales, Héctor Diego, Rossini, Gerardo Luis, Steppke, A., Prabhakaran, D., MacKenzie, A. P., Cabra, Daniel Carlos, Grigera, Santiago Andrés
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2016
Materias:	Ciencias Exactas spin-ice spin-ice Hamiltonian
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/86505
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-86505
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 spin-ice spin-ice Hamiltonian
spellingShingle	Ciencias Exactas spin-ice spin-ice Hamiltonian Borzi, Rodolfo Alberto Gómez Albarracín, Flavia Alejandra Rosales, Héctor Diego Rossini, Gerardo Luis Steppke, A. Prabhakaran, D. MacKenzie, A. P. Cabra, Daniel Carlos Grigera, Santiago Andrés Intermediate magnetization state and competing orders in Dy<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> and Ho<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>
topic_facet	Ciencias Exactas spin-ice spin-ice Hamiltonian
description	Among the frustrated magnetic materials, spin-ice stands out as a particularly interesting system. Residual entropy, freezing and glassiness, Kasteleyn transitions and fractionalization of excitations in three dimensions all stem from a simple classical Hamiltonian. But is the usual spin-ice Hamiltonian a correct description of the experimental systems? Here we address this issue by measuring magnetic susceptibility in the two most studied spin-ice compounds, Dy<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> and Ho<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>, using a vector magnet. Using these results, and guided by a theoretical analysis of possible distortions to the pyrochlore lattice, we construct an effective Hamiltonian and explore it using Monte Carlo simulations. We show how this Hamiltonian reproduces the experimental results, including the formation of a phase of intermediate polarization, and gives important information about the possible ground state of real spin-ice systems. Our work suggests an unusual situation in which distortions might contribute to the preservation rather than relief of the effects of frustration.
format	Articulo Articulo
author	Borzi, Rodolfo Alberto Gómez Albarracín, Flavia Alejandra Rosales, Héctor Diego Rossini, Gerardo Luis Steppke, A. Prabhakaran, D. MacKenzie, A. P. Cabra, Daniel Carlos Grigera, Santiago Andrés
author_facet	Borzi, Rodolfo Alberto Gómez Albarracín, Flavia Alejandra Rosales, Héctor Diego Rossini, Gerardo Luis Steppke, A. Prabhakaran, D. MacKenzie, A. P. Cabra, Daniel Carlos Grigera, Santiago Andrés
author_sort	Borzi, Rodolfo Alberto
title	Intermediate magnetization state and competing orders in Dy<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> and Ho<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>
title_short	Intermediate magnetization state and competing orders in Dy<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> and Ho<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>
title_full	Intermediate magnetization state and competing orders in Dy<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> and Ho<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>
title_fullStr	Intermediate magnetization state and competing orders in Dy<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> and Ho<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>
title_full_unstemmed	Intermediate magnetization state and competing orders in Dy<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> and Ho<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>
title_sort	intermediate magnetization state and competing orders in dy<sub>2</sub>ti<sub>2</sub>o<sub>7</sub> and ho<sub>2</sub>ti<sub>2</sub>o<sub>7</sub>
publishDate	2016
url	http://sedici.unlp.edu.ar/handle/10915/86505
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Intermediate magnetization state and competing orders in Dy<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> and Ho<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>

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