Author

Jian-Peng Liu

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Preprint Sep 2026

Excitons probe intrinsic flat band Mottness in a van der Waals heterostructure

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 unexplored. Here we combine gate-tunable optical spectroscopy with first-principles calculations to study monolayer WSe$_2$ in direct contact...

Xin-Yue Huang, Xin-Tong Tan, Hao-Wei Chen et al. · 0 citations

Preprint Sep 2026

Hilbert-space selected switch of helical edges in an artificial quantum Hall insulator

Quantum Hall effects (QHE) host one-dimensional topologically-protected edge channels, which can serve as an essential ingredient in exotic quantum electronic systems. Yet the manual reconstruction of Landau-level topology, by electrostatic confinement or symmetry breaking, remains experimentally challenging. Here, we...

Nai-Jie Ren, Zhi-Ren Xiong, Kai-Ning Yang et al. · 0 citations