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cond-mat.mtrl-sci2026
Excitons probe intrinsic flat band Mottness in a van der Waals heterostructure
Xinyue Huang, Xintong Tan, Haowei Chen +12
Excitons provide a sensitive optical probe of electronic correlations in nearby two-dimensional materials, yet their coupling to intrinsic flat-band Mott systems remains largely un…
cond-mat.mtrl-sci2026
Layer-parity-dependent interfacial coupling in NbCl/graphene van der Waals heterostructures
Hansheng Xu, Yuchen Gao, Xinyue Huang +8
Strongly correlated two-dimensional systems provide compelling platforms for investigating exotic quantum phenomena. Niobium chloride (NbCl), a single-band Mott insulator,…
cond-mat.mtrl-sci2026
Layer-parity-defined surface polarization in NbCl for excitonic modulation at van der Waals interfaces
Xinyue Huang, Hansheng Xu, Yuchen Gao +10
The intrinsic symmetry breaking in the breathing kagome lattice of layered NbCl provides a unique mechanism for realizing electrically polar surfaces. In each monolayer, th…