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Special temperatures in frustrated ferromagnets
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Bovo, L., Twengström, M., Petrenko, Oleg, Fennell, T., Gingras, M. J. P., Bramwell, S. T. and Henelius, P. (2018) Special temperatures in frustrated ferromagnets. Nature Communications, 9 (1). 1999. doi:10.1038/s41467-018-04297-3
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Official URL: http://dx.doi.org/10.1038/s41467-018-04297-3
Abstract
The description and detection of unconventional magnetic states, such as spin liquids, is a recurring topic in condensed matter physics. While much of the efforts have traditionally been directed at geometrically frustrated antiferromagnets, recent studies reveal that systems featuring competing antiferromagnetic and ferromagnetic interactions are also promising candidate materials. We find that this competition leads to the notion of special temperatures, analogous to those of gases, at which the competing interactions balance, and the system is quasi-ideal. Although induced by weak perturbing interactions, these special temperatures are surprisingly high and constitute an accessible experimental diagnostic of eventual order or spin-liquid properties. The well characterised Hamiltonian and extended low-temperature susceptibility measurement of the canonical frustrated ferromagnet Dy2Ti2O7 enables us to formulate both a phenomenological and microscopic theory of special temperatures for magnets. Other members of this class of magnets include kapellasite Cu3Zn(OH)6Cl2 and the spinel GeCo2O4.
| Item Type: | Journal Article | ||||||||||||||||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Condensed matter, Ferromagnetism, Ferromagnetic materials | ||||||||||||||||||||||||
| Journal or Publication Title: | Nature Communications | ||||||||||||||||||||||||
| Publisher: | Springer Nature | ||||||||||||||||||||||||
| ISSN: | 2041-1723 | ||||||||||||||||||||||||
| Official Date: | 21 May 2018 | ||||||||||||||||||||||||
| Dates: |
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| Volume: | 9 | ||||||||||||||||||||||||
| Number: | 1 | ||||||||||||||||||||||||
| Article Number: | 1999 | ||||||||||||||||||||||||
| DOI: | 10.1038/s41467-018-04297-3 | ||||||||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||||||||
| Access rights to Published version: | Open Access | ||||||||||||||||||||||||
| Copyright Holders: | Springer Nature | ||||||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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