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Special temperatures in frustrated ferromagnets
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 ant...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5962592/ https://www.ncbi.nlm.nih.gov/pubmed/29784922 http://dx.doi.org/10.1038/s41467-018-04297-3 |
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author | Bovo, L. Twengström, M. Petrenko, O. A. Fennell, T. Gingras, M. J. P. Bramwell, S. T. Henelius, P. |
author_facet | Bovo, L. Twengström, M. Petrenko, O. A. Fennell, T. Gingras, M. J. P. Bramwell, S. T. Henelius, P. |
author_sort | Bovo, L. |
collection | PubMed |
description | 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 Dy(2)Ti(2)O(7) enables us to formulate both a phenomenological and microscopic theory of special temperatures for magnets. Other members of this class of magnets include kapellasite Cu(3)Zn(OH)(6)Cl(2) and the spinel GeCo(2)O(4). |
format | Online Article Text |
id | pubmed-5962592 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-59625922018-05-24 Special temperatures in frustrated ferromagnets Bovo, L. Twengström, M. Petrenko, O. A. Fennell, T. Gingras, M. J. P. Bramwell, S. T. Henelius, P. Nat Commun Article 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 Dy(2)Ti(2)O(7) enables us to formulate both a phenomenological and microscopic theory of special temperatures for magnets. Other members of this class of magnets include kapellasite Cu(3)Zn(OH)(6)Cl(2) and the spinel GeCo(2)O(4). Nature Publishing Group UK 2018-05-21 /pmc/articles/PMC5962592/ /pubmed/29784922 http://dx.doi.org/10.1038/s41467-018-04297-3 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Bovo, L. Twengström, M. Petrenko, O. A. Fennell, T. Gingras, M. J. P. Bramwell, S. T. Henelius, P. Special temperatures in frustrated ferromagnets |
title | Special temperatures in frustrated ferromagnets |
title_full | Special temperatures in frustrated ferromagnets |
title_fullStr | Special temperatures in frustrated ferromagnets |
title_full_unstemmed | Special temperatures in frustrated ferromagnets |
title_short | Special temperatures in frustrated ferromagnets |
title_sort | special temperatures in frustrated ferromagnets |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5962592/ https://www.ncbi.nlm.nih.gov/pubmed/29784922 http://dx.doi.org/10.1038/s41467-018-04297-3 |
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