Thermal quenches in spin ice

Abstract

We study the diffusion annihilation process which occurs when spin ice is quenched from a high temperature paramagnetic phase deep into the spin ice regime, where the excitations -- magnetic monopoles -- are sparse. We find that due to the Coulomb interaction between the monopoles, a dynamical arrest occurs, in which `non-universal' lattice-scale constraints impede the complete decay of charge fluctuations. This phenomenon is outside the reach of universal mean-field theory for a two-component Coulomb liquid. We identify the relevant timescales for the dynamical arrest and propose an experiment for detecting monopoles and their dynamics in spin ice based on this non-equilibrium phenomenon.

4 pages, 3 figures (final version)

References in corpus (5)

• Dirac Strings and Magnetic Monopoles in Spin Ice Dy2Ti2O7
• Magnetic Charge Transport
• Low Temperature Spin Freezing in Dy2Ti2O7 Spin Ice
• Observation of Magnetic Monopoles in Spin Ice
• Intermittency, aging and record fluctuations

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• Defects dynamics following thermal quenches in square spin-ice
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• Anomalous out-of-equilibrium dynamics in the spin-ice material Dy${}_2$Ti${}_2$O${}_7$ under moderate magnetic fields
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• Gauge-Free Duality in Pure Square Spin Ice: Topological Currents and Monopoles
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