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| Home > Publications database > $J = ^1_2$ pseudospins and $d − p$ hybridization in the Kitaev spin liquid candidates $RuX_3$ ( X =Cl, Br, I) |
| Home > Publications database > $J = ^1_2$ pseudospins and $d − p$ hybridization in the Kitaev spin liquid candidates $RuX_3$ ( X =Cl, Br, I) |
| Journal Article | PUBDB-2024-01914 |
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2024
Inst.
Woodbury, NY
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Please use a persistent id in citations: doi:10.1103/PhysRevB.109.L180413 doi:10.3204/PUBDB-2024-01914
Abstract: The recent synthesis of ruthenium trihalides $RuX_3$ (𝑋 = Cl, Br, I) has enlarged the set of material candidates for Kitaev spin liquids. The realization of the Kitaev model necessitates the formation of $J = ^1_2$ pseudospins in the octahedral crystal field. We use Ru $𝐿_3$-edge resonant inelastic x-ray scattering to investigate the evolution of multiplet structures in $RuX_3$. We identified quasielastic magnetic correlations and spin-orbit transitions to the $J = ^3_2$ states without discernible trigonal splitting, thereby validating the $J = ^1_2$ description of magnetism in the $RuX_3$ family. Lineshape broadening in $RuX_3$ provides evidence for its bulk metallicity in the vicinity of a bandwidth-controlled metal-insulator transition. Our results highlight the pivotal role of halogen 𝑝 orbitals in controlling the electronic properties of $RuX_3$.
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