Brooks-Bartlett, ME;
Banks, ST;
Jaubert, LDC;
Harman-Clarke, A;
Holdsworth, PCW;
(2014)
Magnetic-Moment Fragmentation and Monopole Crystallization.
PHYSICAL REVIEW X
, 4
(1)
, Article 011007. 10.1103/PhysRevX.4.011007.
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Abstract
The Coulomb phase, with its dipolar correlations and pinch-point–scattering patterns, is central to discussions of geometrically frustrated systems, from water ice to binary and mixed-valence alloys, as well as numerous examples of frustrated magnets. The emergent Coulomb phase of lattice-based systems has been associated with divergence-free fields and the absence of long-range order. Here, we go beyond this paradigm, demonstrating that a Coulomb phase can emerge naturally as a persistent fluctuating background in an otherwise ordered system. To explain this behavior, we introduce the concept of the fragmentation of the field of magnetic moments into two parts, one giving rise to a magnetic monopole crystal, the other a magnetic fluid with all the characteristics of an emergent Coulomb phase. Our theory is backed up by numerical simulations, and we discuss its importance with regard to the interpretation of a number of experimental results.
| Type: | Article |
|---|---|
| Title: | Magnetic-Moment Fragmentation and Monopole Crystallization |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevX.4.011007 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevX.4.011007 |
| Language: | English |
| Additional information: | This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. http://creativecommons.org/licenses/by/3.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Engineering Science Faculty Office |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1468905 |
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