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Magnetic monopole density and antiferromagnetic domain control in spin-ice iridates
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Pearce, Matthew J., Götze, K., Szabó, A., Sikkenk, T. S., Lees, Martin R., Boothroyd, A. T., Prabhakaran, D., Castelnovo, C. and Goddard, Paul (2022) Magnetic monopole density and antiferromagnetic domain control in spin-ice iridates. Nature Communications, 13 (1). 444 . doi:10.1038/s41467-022-27964-y ISSN 2041-1723.
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WRAP-Magnetic-monopole-density-antiferromagnetic-spin-ice-iridates-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1590Kb) | Preview |
Official URL: http://dx.doi.org/10.1038/s41467-022-27964-y
Abstract
Magnetically frustrated systems provide fertile ground for complex behaviour, including unconventional ground states with emergent symmetries, topological properties, and exotic excitations. A canonical example is the emergence of magnetic-charge-carrying quasiparticles in spin-ice compounds. Despite extensive work, a reliable experimental indicator of the density of these magnetic monopoles is yet to be found. Using measurements on single crystals of Ho2Ir2O7 combined with dipolar Monte Carlo simulations, we show that the isothermal magnetoresistance is highly sensitive to the monopole density. Moreover, we uncover an unexpected and strong coupling between the monopoles on the holmium sublattice and the antiferromagnetically ordered iridium ions. These results pave the way towards a quantitative experimental measure of monopole density and demonstrate the ability to control antiferromagnetic domain walls using a uniform external magnetic field, a key goal in the design of next-generation spintronic devices.
| Item Type: | Journal Article | ||||||||||||||||||||||||
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| Subjects: | Q Science > QC Physics | ||||||||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Spin waves, Antiferromagnetism, Magnetic monopoles | ||||||||||||||||||||||||
| Journal or Publication Title: | Nature Communications | ||||||||||||||||||||||||
| Publisher: | Nature Publishing Group | ||||||||||||||||||||||||
| ISSN: | 2041-1723 | ||||||||||||||||||||||||
| Official Date: | 21 January 2022 | ||||||||||||||||||||||||
| Dates: |
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| Volume: | 13 | ||||||||||||||||||||||||
| Number: | 1 | ||||||||||||||||||||||||
| Article Number: | 444 | ||||||||||||||||||||||||
| DOI: | 10.1038/s41467-022-27964-y | ||||||||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||||||||
| Date of first compliant deposit: | 21 January 2022 | ||||||||||||||||||||||||
| Date of first compliant Open Access: | 21 January 2022 | ||||||||||||||||||||||||
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