We propose a realization of Kondo lattice physics in moiré superlattices at the interface between a $\mathrm{W}{X}_2$ homobilayer and $\mathrm{Mo}{X}_2$ monolayer $(X=\mathrm{S},\mathrm{Se})$. Under appropriate gating conditions, the interface $\mathrm{W}{X}_2$ layer forms a triangular lattice of local moments that couple to itinerant electrons in the other $\mathrm{W}{X}_2$ layer via a gate-tunable Kondo exchange interaction. Using a parton mean-field approach, we identify a range of twist angles which support a gate-tuned quantum phase transition between a heavy Fermi liquid with large anomalous Hall conductance and a chiral spin liquid coexisting with a light Fermi liquid and describe experimental signatures to distinguish among competing theoretical scenarios.

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• Exotic phases of matter
• Fractionalization
• Kondo effect
• Quantum criticality
• Quantum spin liquid
• Heavy-fermion systems
• Superlattices
• Transition metal dichalcogenides
• van der Waals systems
• Hartree-Fock methods
• Linear response theory