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- Title
Kitaev spin-orbital bilayers and their moiré superlattices.
- Authors
Nica, Emilian Marius; Akram, Muhammad; Vijayvargia, Aayush; Moessner, Roderich; Erten, Onur
- Abstract
We determine the phase diagram of a bilayer, Yao-Lee spin-orbital model with inter-layer interactions (J), for several stackings and moiré superlattices. For AA stacking, a gapped Z 2 quantum spin liquid phase emerges at a finite Jc. We show that this phase survives in the well-controlled large-J limit, where an isotropic honeycomb toric code emerges. For moiré superlattices, a finite-q inter-layer hybridization is stabilized. This connects inequivalent Dirac points, effectively 'untwisting' the system. Our study thus provides insight into the spin-liquid phases of bilayer spin-orbital Kitaev materials.
- Subjects
QUANTUM spin liquid; SUPERLATTICES; PHASE diagrams
- Publication
NPJ Quantum Materials, 2023, Vol 8, Issue 1, p1
- ISSN
2397-4648
- Publication type
Article
- DOI
10.1038/s41535-023-00541-2