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Candidate quantum spin ice in the pyrochlore Pr2Hf2O7
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Sibille, Romain, Lhotel, Elsa, Ciomaga Hatnean, Monica, Balakrishnan, Geetha, Fåk, Björn, Gauthier, Nicolas, Fennell, Tom and Kenzelmann, Michel (2016) Candidate quantum spin ice in the pyrochlore Pr2Hf2O7. Physical Review B, 94 (2). 024436 . doi:10.1103/PhysRevB.94.024436
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Official URL: http://dx.doi.org/10.1103/PhysRevB.94.024436
Abstract
We report the low temperature magnetic properties of the pyrochlore Pr2Hf2O7. Polycrystalline and single crystal samples are investigated using time-of-flight neutron spectroscopy and macroscopic measurements, respectively. The crystal-field splitting produces a non-Kramers doublet ground state for Pr3+, with Ising-like anisotropy. Below 0.5 K ferromagnetic correlations develop, which suggests that the system enters a spin-ice-like state associated with the metamagnetic behavior observed at μ0Hc ∼ 2.4 T. In this regime, the development of a discrete inelastic excitation in the neutron spectra indicates the appearance of spin dynamics that are likely related to cooperative quantum fluctuations.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||||
| Divisions: | Faculty of Science > Physics | ||||||
| Library of Congress Subject Headings (LCSH): | Nuclear spin, Ferromagnetism, Crystal field theory, Anisotropy | ||||||
| Journal or Publication Title: | Physical Review B | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 2469-9950 | ||||||
| Official Date: | 27 July 2016 | ||||||
| Dates: |
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| Volume: | 94 | ||||||
| Number: | 2 | ||||||
| Article Number: | 024436 | ||||||
| DOI: | 10.1103/PhysRevB.94.024436 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Copyright Holders: | American Physical Society | ||||||
| Funder: | Seventh Framework Programme (European Commission) (FP7), Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung [Swiss National Science Foundation] (SNSF), Engineering and Physical Sciences Research Council (EPSRC) | ||||||
| Grant number: | 290605 COFUND, PSI-FELLOW 228464 MICROKELVIN (FP7), 200021 _ 140862, 200021 _ 138018, 200020 _ 162626 (SNSF), EP/M028771/1 (EPSRC) |
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