Fabrication and Characterization of the Moire Surface State on a Topological Insulator.

ABSTRACT: A Moiré superlattice on the topological insulator surface is predicted to exhibit many novel properties but has not been experimentally realized. Here, we developed a two-step growth method to successfully fabricate a topological insulator Sb₂Te₃ thin film with a Moiré superlattice, which is generated by a twist of the topmost layer via molecular beam epitaxy. The established Moiré topological surface state is characterized by scanning tunneling microscopy and spectroscopy. By application of a magnetic field, new features in Landau levels arise on the Moiré region compared to the pristine surface of Sb₂Te₃, which makes the system a promising platform for pursuing next-generation electronics. Notably, the growth method, which circumvents contamina

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC12412165 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature