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Magnetic correlations in the spin ice Ho2-xYxTi2O7 as revealed by neutron polarization analysis
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Chang, L. J., Su, Y., Kao, Y-J., Chou, Y. Z., Mittal, R., Schneider, H., Brueckel, Th., Balakrishan, G. and Lees, Martin R. (2010) Magnetic correlations in the spin ice Ho2-xYxTi2O7 as revealed by neutron polarization analysis. Physical Review B, Vol.82 (No.17). Article: 172403 . doi:10.1103/PhysRevB.82.172403 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.82.172403
Abstract
We present single-crystal magnetic diffuse neutron-scattering measurements with polarization analysis on the spin ice Ho2-xYxTi2O7 (x=0, 0.3, and 1). At 2 K, the spin-flip scattering patterns are typical of a nearest-neighbor spin ice and the effects of Y doping are seen in the widths of the pinch points. At low temperature, the spin-flip patterns are characteristic of a dipolar spin ice and are unaffected by Y doping. In the nonspin-flip channel, we observe the signature of strong antiferromagnetic correlations at the same temperature as the dipolar spin-ice correlations appear in the spin-flip channel. These experimental observations have been well reproduced by our Monte Carlo simulations.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Physical Review B | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1098-0121 | ||||
| Official Date: | 5 November 2010 | ||||
| Dates: |
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| Volume: | Vol.82 | ||||
| Number: | No.17 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | Article: 172403 | ||||
| DOI: | 10.1103/PhysRevB.82.172403 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | NTU | ||||
| Grant number: | 98R0066-65, 98R0066-68, NSC 96-2739-M-213-001, NSC 99-2112-M-007-020, NSC 97-2628-M-002-011-MY3 |
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