ARPES and STM study on twisted transition metal dichalcogenides

Twisted van der Waals heterostructures have recently been proposed as a condensed-matter platform for realizing controllable quantum models due to the low-energy moiré bands with specific charge distributions in moiré superlattices. Here, using angle-resolved photoemission spectroscopy with sub-micron spatial resolution (μ-ARPES) and scanning tunneling microscopy (STM), we performed a systematic investigation on the electronic structure of twisted bilayer WSe₂. Consistent evidence for moiré bands in both real and momentum space have been observed, which confirms twisted transition metal dichalcogenides as a versatile platform to investigate strongly correlated physics.