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30 papers
Valley-polarized Exitonic Mott Insulator in WS2/WSe2 Moiré Superlattice
Zhen Lian, Yuze Meng, Lei Ma +14
Strongly enhanced electron-electron interaction in semiconducting moiré superlattices formed by transition metal dichalcogenides (TMDCs) heterobilayers has led to a plethora of int…
Exciton Superposition across Moiré States in a Semiconducting Moiré Superlattice
Zhen Lian, Dongxue Chen, Yuze Meng +9
Moiré superlattices of semiconducting transition metal dichalcogenides (TMDCs) enable unprecedented spatial control of electron wavefunctions in an artificial lattice with periodic…
Measurements of Correlated Insulator Gaps in a Transition Metal Dichalcogenide Moiré Superlattice
Xiong Huang, Dongxue Chen, Zhen Lian +8
Moiré superlattices of transitional metal dichalcogenides exhibit strong electron-electron interaction that has led to experimental observations of Mott insulators and generalized…
Quadrupolar Excitons and Hybridized Interlayer Mott Insulator in a Trilayer Moiré Superlattice
Zhen Lian, Dongxue Chen, Lei Ma +13
Transition metal dichalcogenide (TMDC) moiré superlattices, owing to the moiré flatbands and strong correlation, can host periodic electron crystals and fascinating correlated phys…
Hexcitons and oxcitons in monolayer WSe
Dinh Van Tuan, Su-Fei Shi, Xiaodong Xu +2
In the archetypal monolayer semiconductor WSe, the distinct ordering of spin-polarized valleys (low-energy pockets) in the conduction band allows for studies of not only simple…
Reversible Engineering of Topological Insulator Surface State Conductivity through Optical Excitation
Faji Xie, Zhen Lian, Shuai Zhang +13
Despite the broadband response, limited optical absorption at a particular wavelength hinders the development of optoelectronics based on Dirac fermions. Heterostructures of graphe…