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Far-from-equilibrium monopole dynamics in spin ice

Paulsen, C., Jackson, M. J., Lhotel, E., Canals, B., Prabhakaran, D., Matsuhira, K., Giblin, S. R. ORCID: and Bramwell, S. T. 2014. Far-from-equilibrium monopole dynamics in spin ice. Nature Physics 10 (2) , pp. 135-139. 10.1038/nphys2847

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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 superfluidity1 to magnetic monopoles in spin ice2, 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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Nature Publishing Group
ISSN: 1745-2473
Date of Acceptance: 27 November 2013
Last Modified: 07 Nov 2023 19:41

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