The multiple symmetry sustaining phase transitions of spin ice
arXiv:1903.02778 · doi:10.1103/PhysRevB.99.224425
Abstract
We present the full phase diagram of the dumbbell model of spin ice as a function of temperature, chemical potential and staggered chemical potential which breaks the translational lattice symmetry in favour of charge crystal ordering. We observe a double winged structure with five possible phases, monopole fluid (spin ice), fragmented single monopole crystal phases and double monopole crystal, the zinc blend structure. Our model provides a skeleton for liquid-liquid phase transitions and for the winged structures observed for itinerant magnets under pressure and external field. We relate our results to recent experiments on HoIrO and propose a wide ranging set of new experiments that exploit the phase diagram, including high pressure protocols, dynamical scaling of Kibble-Zurek form and universal violations of the fluctuation-dissipation theorem.
14 pages, 14 figures
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Cited by in corpus (12)
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- Violation of the fluctuation-dissipation theorem and effective temperatures in spin ice
- Electric activity at magnetic moment fragmentation in spin ice
- Tunable critical correlations in kagome ice
- Neutron scattering from fragmented frustrated magnets
- Perfectly hidden order and Z2 confinement transition in a fully packed monopole liquid
- Interplay of symmetry breaking and deconfinement in 3D quantum vertex models
- Crossover from string to cluster dynamics following a field quench in spin ice
- Emergent tri-criticality in magnetic metamaterials
- Ferromagnetic fragmented state in the pyrochlore HoRuO