Event

Moiré superlattices formed between two-dimensional (2D) materials provide new opportunities to engineer novel quantum phenomena, as exemplified by the intriguing observations in twisted bilayer graphene (tBLG). Semiconducting transition metal dichalcogenides (TMDCs) represent another distinct class of moiré system, where the low-energy physics is largely captured by a single-band Hubbard model. In this talk, I will discuss our efforts to study semiconducting moiré superlattices with optical spectroscopy. Taking advantage of the strong light-matter interaction in 2D semiconductors, we access various correlated phases with high sensitivity optical probe. The imaging capability further allows us to look into their spatial variations in wide field.