Coexistence of random singlets and disordered Kitaev spin liquid in H3LiIr2 O6
- Authors
- Lee, C.; Lee, S.; Choi, Y.; Wang, C.; Luetkens, H.; Shiroka, T.; Jang, Z.; Yoon, Young-Gui; Choi, K.-Y.
- Issue Date
- Jan-2023
- Publisher
- American Physical Society
- Citation
- Physical Review B, v.107, no.1
- Journal Title
- Physical Review B
- Volume
- 107
- Number
- 1
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/66348
- DOI
- 10.1103/PhysRevB.107.014424
- ISSN
- 2469-9950
2469-9969
- Abstract
- We combine static magnetic susceptibility χ(T), muon-spin relaxation, and H1 nuclear magnetic resonance measurements to explore the spin dynamics in the disordered-induced quantum spin liquid candidate H3LiIr2O6. Inverse Laplace transform analysis of the H1 spin-lattice relaxation rate 1/T1 enables us to identify two characteristic temperatures Tg=110K and T∗=26K. Below Tg, a slower 1/T1slow component dictated by gapped excitations with a spin gap Δh=30-38K evolves distinctly from a faster 1/T1fast component pertaining to gapless excitations. Furthermore, we observe a sub-Curie divergent χ(T)?T-0.68, a power-law dependent 1/T1fast?T1.4, and a weakly activated 1/T1slow?exp(-Δl/kBT) (Δl=3-6K) below T∗=26K. All these features suggest the coexistence of a disordered spin-liquid state and spin singlets with spatially distributed gaps. © 2023 American Physical Society.
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