Group Seminar

Emergent Chiral Spin Liquids in Kitaev Systems: From Monolayer to Multilayer

Kitaev systems offer a rich platform for exploring quantum spin liquids (QSLs) with chiral and topological character. In this talk, we will present recent results on emergent chiral spin liquid phases in both spin-½ and integer-spin (S=1) Kitaev models [1,2], emphasizing the role of dimensionality [3] — from monolayers to multilayers — in shaping their excitation spectra and topological properties.

Using parton-based approaches and comparison with exact methods, we will discuss how spin-orbit coupling, frustration, and interlayer interactions drive the system into distinct chiral phases, including gapless and gapped regimes. Particular focus will be given to even-odd effects in layered structures and the interplay between lattice geometry and spin representation. Relevance to candidate materials such as α-RuCl₃ and Ni-based honeycomb magnets will be addressed, along with experimentally accessible signatures of chirality and spin fractionalization.

[1] Phys. Rev. Lett. 124, 217203 (2020)
[2] Phys. Rev. B 110, 134402 (2024)
[3] Phys. Rev. B 111, 085152 (2025)