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First-order magnetic transition in Yb2Ti2O7
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Lhotel, E., Giblin, S. R., Lees, Martin R., Balakrishnan, Geetha, Chang, L. J. and Yasui, Y. (2014) First-order magnetic transition in Yb2Ti2O7. Physical Review B (Condensed Matter and Materials Physics), 89 (22). 224419. doi:10.1103/PhysRevB.89.224419 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.89.224419
Abstract
The very nature of the ground state of the pyrochlore compound Yb2Ti2O7 is much debated, because experimental results demonstrate evidence for either a disordered ground state or a long-range ordered ground state. Indeed, the delicate balance of exchange interactions and anisotropy is believed to lead to competing states, such as a quantum spin liquid state or a ferromagnetic state which may originate from an Anderson-Higgs transition. We present a detailed magnetization study demonstrating a first-order ferromagnetic transition at 245 and 150 mK in a powder and a single-crystal sample, respectively. Its first-order character is preserved up to applied fields of ∼200 Oe. The transition stabilizes a ferromagnetic component and involves slow dynamics in the magnetization. Residual fluctuations are also evidenced, the presence of which might explain some of the discrepancies between previously published data for Yb2Ti2O7.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||
Publisher: | American Physical Society | ||||
ISSN: | 1098-0121 | ||||
Official Date: | 30 June 2014 | ||||
Dates: |
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Volume: | 89 | ||||
Number: | 22 | ||||
Article Number: | 224419 | ||||
DOI: | 10.1103/PhysRevB.89.224419 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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