3 papers
cond-mat.mtrl-sci2026
Organizing Principles for Moiré Quantum Matter
Qiaoling Xu, Yifan Gao, Tao Zhang +16
Moiré flat bands in van der Waals bilayers are usually discussed through a small set of mechanisms associated with the and valleys of hexagonal crystals, and more recentl…
cond-mat.str-el2026
Engineering excitonic metal-insulator transitions in ultra-thin doped copper sulfides
Haiyang Chen, Yufeng Liu, Yashi Jiang +10
Delicate engineering of the bands remains challenging due to complex electronic, structural, and compositional interplay. We demonstrate the formation of distinct metallic and insu…
cond-mat.str-el2025
Engineering 2D square lattice Hubbard models in 90 twisted Ge/SnX (X=S, Se) moiré supperlattices
Qiaoling Xu, Ammon Fischer, Nicolas Tancogne-Dejean +6
Due to the large-period superlattices emerging in moire two-dimensional (2D) materials, electronic states in such systems exhibit low energy flat bands that can be used to simulate…