Room-temperature correlated states in twisted bilayer MoS$_2$

Fanfan Wu; Qiaoling Xu; Qinqin Wang; Yanbang Chu; Lu Li; Jian Tang; Jieying Liu; Jinpeng Tian; Yiru Ji; Le Liu; Yalong Yuan; Zhiheng Huang; Jiaojiao Zhao; Xiaozhou Zan; Kenji Watanabe; Takashi Taniguchi; Dongxia Shi; Gangxu Gu; Yang Xu; Lede Xian; Wei Yang; Luojun Du; Guangyu Zhang

arXiv · 2311.16655

Room-temperature correlated states in twisted bilayer MoS$_2$

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Abstract

Moir\'e 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 the transport evidences of room-temperature correlated electronic states and layer-hybridized SU(4) Hubbard model simulator in AB-stacked MoS$_2$ homo-bilayer moir\'e superlattices. Correlated insulating states at moir\'e band filling factors v = 1, 2, 3 are unambiguously established in twisted bilayer MoS$_2$. Remarkably, the correlated electronic states can persist up to a record-high critical temperature of over 285 K. The realization of room-temperature correlated states in twisted bilayer 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 moir\'e superlattice effects on electronic correlations. Furthermore, extreme large non-linear Hall responses up to room-temperature are uncovered near correlated insulating states, demonstrating the quantum geometry of moir\'e flat conduction band.

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Fanfan Wu, Qiaoling Xu, Qinqin Wang, Yanbang Chu, Lu Li, Jian Tang, Jieying Liu, Jinpeng Tian, Yiru Ji, Le Liu, Yalong Yuan, Zhiheng Huang, Jiaojiao Zhao, Xiaozhou Zan, Kenji Watanabe, Takashi Taniguchi, Dongxia Shi, Gangxu Gu, Yang Xu, Lede Xian, Wei Yang, Luojun Du, Guangyu Zhang. 2023-11-28. Room-temperature correlated states in twisted bilayer MoS$_2$. https://arxiv.org/abs/2311.16655

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