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Disorder and quantum spin ice
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Martin, N., Bonville, P., Lhotel, E., Guitteny, S., Wildes, A., Decorse, C., Ciomaga Hatnean, Monica, Balakrishnan, Geetha, Mirebeau, I. and Petit, S. (2017) Disorder and quantum spin ice. Physical Review X, 7 (4). 041028. doi:10.1103/PhysRevX.7.041028 ISSN 2160-3308.
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Official URL: http://dx.doi.org/10.1103/PhysRevX.7.041028
Abstract
We report on diffuse neutron scattering experiments providing evidence for the presence of random strains in the quantum spin-ice candidate Pr2Zr2O7. Since Pr3รพ is a non-Kramers ion, the strain deeply modifies the picture of Ising magnetic moments governing the low-temperature properties of this material. It is shown that the derived strain distribution accounts for the temperature dependence of the specific heat and of the spin-excitation spectra. Taking advantage of mean-field and spin-dynamics simulations, we argue that the randomness in Pr2Zr2O7 promotes a new state of matter, which is disordered yet characterized by short-range antiferroquadrupolar correlations, and from which emerge spin-ice-like excitations. Thus, this study gives an original research route in the field of quantum spin ice.
| 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): | Nuclear spin, Condensed matter | ||||||||
| Journal or Publication Title: | Physical Review X | ||||||||
| Publisher: | American Physical Society | ||||||||
| ISSN: | 2160-3308 | ||||||||
| Official Date: | 31 October 2017 | ||||||||
| Dates: |
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| Volume: | 7 | ||||||||
| Number: | 4 | ||||||||
| Article Number: | 041028 | ||||||||
| DOI: | 10.1103/PhysRevX.7.041028 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Copyright Holders: | American Physical Society | ||||||||
| Date of first compliant deposit: | 6 November 2017 | ||||||||
| Date of first compliant Open Access: | 7 November 2017 | ||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), France. Agence nationale de la recherche (ANR) | ||||||||
| Grant number: | EP/M028771/1 (EPSRC) | ||||||||
| Open Access Version: |
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