Journal
NATURE PHYSICS
Volume 10, Issue 2, Pages 135-139Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHYS2847
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Funding
- European Community-Research Infrastructures under the FP7 Capacities Specific Programme
- MICROKELVIN project [228464]
- French ANR project CHIRnMAG
- EPSRC [EP/I034599/1, EP/K028960/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K028960/1] Funding Source: researchfish
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Condensed matter in the low-temperature limit reveals exotic physics associated with unusual orders and excitations, with examples ranging from helium superfluidity(1) to magnetic monopoles in spin ice(2,3). The far-from-equilibrium physics of such low-temperature states may be even more exotic, yet to access it in the laboratory remains a challenge. Here we demonstrate a simple and robust technique the 'magnetothermal avalanche quench' and its use in the controlled creation of non-equilibrium populations of magnetic monopoles in spin ice at millikelvin temperatures. These populations are found to exhibit spontaneous dynamical effects that typify far-from-equilibrium systems and yet are captured by simple models. Our method thus opens new directions in the study of far-from-equilibrium states in spin ice and other exotic magnets.
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