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Effect of structural disorder on the Kitaev magnet Ag$_{3}$LiIr$_{2}$O$_{6}$
- Source :
- Phys. Rev. B 103, 094427 (2021)
- Publication Year :
- 2020
-
Abstract
- Searching for an ideal Kitaev spin liquid candidate with anyonic excitations and long-range entanglement has motivated the synthesis of a new family of intercalated Kitaev magnets such as H$_{3}$LiIr$_{2}$O$_{6}$, Cu$_{2}$IrO$_{3}$, and Ag$_{3}$LiIr$_{2}$O$_{6}$. The absence of a susceptibility peak and a two-step release of the magnetic entropy in these materials has been proposed as evidence of proximity to the Kitaev spin liquid. Here we present a comparative study of the magnetic susceptibility, heat capacity, and muon spin relaxation ($\mu$SR) between two samples of Ag$_{3}$LiIr$_{2}$O$_{6}$ in the clean and disordered limits. In the disordered limit, the absence of a peak in either susceptibility or heat capacity and a weakly depolarizing $\mu$SR signal may suggest a proximate spin liquid ground state. In the clean limit, however, we resolve a peak in both susceptibility and heat capacity data, and observe clear oscillations in $\mu$SR that confirm long-range antiferromagnetic ordering. The $\mu$SR oscillations fit to a Bessel function, characteristic of an incommensurate order, as reported in the parent compound $\alpha$-Li$_{2}$IrO$_{3}$. Our results clarify the role of structural disorder in the intercalated Kitaev magnets.<br />Comment: 8 pages, 9 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 103, 094427 (2021)
- Publication Type :
- Report
- Accession number :
- edsarx.2011.07004
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.103.094427