Journal
PHYSICAL REVIEW LETTERS
Volume 120, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.167202
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Funding
- Ministry of Science and Technology of China [2016YFA0300502, 2016YFA0301604]
- National Natural Science Foundation of China [11421092, 11574359, 11625522, 11674370]
- Chinese Academy of Sciences [XDPB0803]
- National Thousand-Young Talents Program of China
- Government of Canada through the Department of Innovation, Science and Economic Development Canada
- Province of Ontario through the Ministry of Research, Innovation and Science
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We study the quantum spin dynamics of a frustrated XXZ model on a pyrochlore lattice by using large-scale quantum Monte Carlo simulation and stochastic analytic continuation. In the low-temperature quantum spin ice regime, we observe signatures of coherent photon and spinon excitations in the dynamic spin structure factor. As the temperature rises to the classical spin ice regime, the photon disappears from the dynamic spin structure factor, whereas the dynamics of the spinon remain coherent in a broad temperature window. Our results provide experimentally relevant, quantitative information for the ongoing pursuit of quantum spin ice materials.
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