1. Robust quantum spin liquid state in the presence of giant magnetic isotope effect in D3LiIr2O6.
- Author
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Takayama, T., Gibbs, A. S., Kitagawa, K., Matsumoto, Y., Ishii, K., Kato, A., Takano, R., Bette, S., Dinnebier, R., and Takagi, H.
- Subjects
QUANTUM spin liquid ,QUANTUM liquids ,PARTICLES (Nuclear physics) ,PHYSICAL sciences ,QUANTUM states - Abstract
The deuterium isotope effect on the honeycomb iridate H
3 LiIr2 O6 , a quantum spin-orbit-entangled liquid, was examined by synthesizing D3 LiIr2 O6 . The structural refinements indicate the different character of the interlayer OH and OD bonds, which results in a giant isotope effect on the magnetic interactions; the antiferromagnetic Curie-Weiss temperature |θCW | of D3 LiIr2 O6 increases to ~ 170 K from ~ 100 K of H3 LiIr2 O6 . Nevertheless, the quantum liquid state is robust against the deuterium isotope exchange in contrast to the theoretical prediction that the Kitaev spin liquid is stable only for a limited phase space of magnetic interactions. The bond- and site disorders associated with disordered OD(H) bonds, in combination with Kitaev physics, may play a role in realizing the quantum liquid state. [ABSTRACT FROM AUTHOR]- Published
- 2025
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