# Analytical theory of pyrochlore cooperative paramagnets

@article{Pandey2019AnalyticalTO,
title={Analytical theory of pyrochlore cooperative paramagnets},
author={Akshat Pandey and Roderich Moessner and Claudio Castelnovo},
journal={Physical Review B},
year={2019}
}
• Published 21 October 2019
• Physics
• Physical Review B
The pyrochlore lattice is associated with several potential and actual spin liquid phases as a result of its strong geometric frustration. At finite temperature, these can exhibit an unusually broad cross-over regime to a conventional paramagnet. Here, we study this regime analytically by showing how a single-tetrahedron Hamiltonian can extrapolate beyond the first term of a high-temperature expansion and yield insights into the build-up of correlations. We discuss how this unusual behaviour is…

## Figures from this paper

• Physics, Materials Science
Proceedings of the National Academy of Sciences
• 2020
It is shown using neutron scattering on high-quality crystals that the unusual spectra may arise as a superposition of ferromagnetic and antiferromagnetic spin waves, which indicates that these disparate forms of magnetism actually coexist in Yb2Ti2O7, which is consistent with near-perfect degeneracy.
• Physics
• 2019
aInstitute for Quantum Matter, Johns Hopkins University, Baltimore, MD 21218; bDepartment of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218; cNeutron Scattering Division, Oak

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