Journal
PHYSICAL REVIEW B
Volume 101, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.101.075112
Keywords
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Funding
- Department of Energy Early Career Award, Office of Basic Energy Sciences, Materials Sciences and Engineering Division [DE-AC02-05CH11231]
- National Science Foundation [DGE 1106400, DGE 1752814]
- UC LEADs program
- Gordon and Betty Moore Foundations EPiQS Initiative [GBMF4374]
- National Research Council Fellowship through the National Institute of Standards and Technology
- [NSF-DMR-1700030]
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We report the existence of a high-temperature magnetic anomaly in the three-dimensional Kitaev candidate material, beta-Li2IrO3. Signatures of the anomaly appear in magnetization, heat capacity, and muon spin relaxation measurements. The onset coincides with a reordering of the principal axes of magnetization, which is thought to be connected to the onset of Kitaev-like correlations in the system. The anomaly also shows magnetic hysteresis with a spatially anisotropic magnitude that follows the spin-anisotropic exchange anisotropy of the underlying Kitaev Hamiltonian. We discuss possible scenarios for a bulk and impurity origin.
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