%0 Journal Article %1 nica2023kitaev %A Nica, Emilian Marius %A Akram, Muhammad %A Vijayvargia, Aayush %A Moessner, Roderich %A Erten, Onur %D 2023 %J npj Quantum Mater. %K b %N 1 %P 9-- %R 10.1038/s41535-023-00541-2 %T Kitaev spin-orbital bilayers and their moiré superlattices %U https://doi.org/10.1038/s41535-023-00541-2 %V 8 %X 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.

@article{nica2023kitaev, 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 $${{\mathbb{Z}}}_{2}$$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.}, added-at = {2023-11-22T17:19:58.000+0100}, author = {Nica, Emilian Marius and Akram, Muhammad and Vijayvargia, Aayush and Moessner, Roderich and Erten, Onur}, biburl = {https://www.bibsonomy.org/bibtex/24234d8a22d3c349d2e40da0b51910c25/ctqmat}, day = 15, doi = {10.1038/s41535-023-00541-2}, interhash = {bdffe4e21c9cbe278ac1d68dc1be3295}, intrahash = {4234d8a22d3c349d2e40da0b51910c25}, issn = {23974648}, journal = {npj Quantum Mater.}, keywords = {b}, month = {02}, number = 1, pages = {9--}, refid = {Nica2023}, timestamp = {2023-11-22T17:19:58.000+0100}, title = {Kitaev spin-orbital bilayers and their moiré superlattices}, url = {https://doi.org/10.1038/s41535-023-00541-2}, volume = 8, year = 2023 }