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Fluctuations and all-in–all-out ordering in Dipole-Octupole Nd2Zr2O7
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Lhotel, Elsa, Petit, Sylvain, Guitteny, S., Florea, O., Ciomaga Hatnean, Monica, Colin, C., Ressouche, E., Lees, Martin R. and Balakrishnan, G. (2015) Fluctuations and all-in–all-out ordering in Dipole-Octupole Nd2Zr2O7. Physical Review Letters, 115 (19). 197202. doi:10.1103/PhysRevLett.115.197202
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.115.197202
Abstract
By means of neutron scattering and magnetization measurements down to 90 mK, we determine the magnetic ground state of the spin-ice candidate Nd2Zr2O7. We show that, despite ferromagnetic interactions, Nd2Zr2O7 undergoes a transition around 285 mK towards an all-in–all-out antiferromagnetic state, with a strongly reduced ordered magnetic moment.We establish the (H,T) phase diagram in the three directions of the applied field and reveal a metamagnetic transition around 0.1 T, associated with an unexpected shape of the magnetization curves.We propose that this behavior results from the peculiar nature of the Nd3þ doublet, a dipolar-octupolar doublet, different from the standard Kramers doublet studied to date, thus revealing the importance of multipolar correlations in the properties of pyrochlore oxides.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||||
| Divisions: | Faculty of Science > Physics | ||||||
| Library of Congress Subject Headings (LCSH): | Physics., Magnetism., Neutrons -- Scattering. | ||||||
| Journal or Publication Title: | Physical Review Letters | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 0031-9007 | ||||||
| Official Date: | 4 November 2015 | ||||||
| Dates: |
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| Volume: | 115 | ||||||
| Number: | 19 | ||||||
| Article Number: | 197202 | ||||||
| DOI: | 10.1103/PhysRevLett.115.197202 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Copyright Holders: | American Physical Society | ||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Laboratoire d’Alliances Nanosciences-Énergies du Futur (LANEF) | ||||||
| Grant number: | EP/M028771/1 |
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