Artículo
Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7
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
Fecha de publicación:
08/2016
Editorial:
Nature Publishing Group
Revista:
Nature Communications
ISSN:
2041-1723
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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, Dy2Ti2O7 and Ho2Ti2O7, 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.
Palabras clave:
Spin Ice
,
Lattice Deformations
,
Magnetization
,
Pyrochlore
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFLP)
Articulos de INST.DE FISICA LA PLATA
Articulos de INST.DE FISICA LA PLATA
Articulos(IFLYSIB)
Articulos de INST.FISICA DE LIQUIDOS Y SIST.BIOLOGICOS (I)
Articulos de INST.FISICA DE LIQUIDOS Y SIST.BIOLOGICOS (I)
Citación
Borzi, Rodolfo Alberto; Gómez Albarracín, Flavia Alejandra; Rosales, Héctor Diego; Rossini, Gerardo Luis; Steppke, A.; et al.; Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7; Nature Publishing Group; Nature Communications; 7; 8-2016; 1-8; 12592
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