Moiré superlattices have emerged as an exciting condensed-matter quantum simulator for exploring the exotic physics of strong electronic correlations. Notable progress has been witnessed, but such correlated states are achievable usually at low temperatures. Here, we report evidence of possible room-temperature correlated electronic states and layer-hybridized SU(4) model simulator in AB-stacked ${\mathrm{MoS}}_2$ homobilayer moiré superlattices. Correlated insulating states at moiré band filling factors $v=1$, 2, 3 are unambiguously established in twisted bilayer ${\mathrm{MoS}}_2$. Remarkably, the correlated electronic state at $v=1$ shows a giant correlated gap of $\sim 126\mathrm{meV}$ and may persist up to a record-high critical temperature over 285 K. The realization of a possible room-temperature correlated state with a large correlated gap in twisted bilayer ${\mathrm{MoS}}_2$ can be understood as the cooperation effects of the stacking-specific atomic reconstruction and the resonantly enhanced interlayer hybridization, which largely amplify the moiré superlattice effects on electronic correlations. Furthermore, extreme large nonlinear Hall responses up to room temperature are uncovered near correlated electronic states, demonstrating the quantum geometry of moiré flat conduction band.

• Received 30 January 2023
• Revised 21 August 2023
• Accepted 21 November 2023

DOI:https://doi.org/10.1103/PhysRevLett.131.256201