Nanometric Moire Stripes on the Surface of Bi₂Se₃ Topological Insulator.

ABSTRACT: Mismatch between adjacent atomic layers in low-dimensional materials, generating moiré patterns, has recently emerged as a suitable method to tune electronic properties by inducing strong electron correlations and generating novel phenomena. Beyond graphene, van der Waals structures such as three-dimensional (3D) topological insulators (TIs) appear as ideal candidates for the study of these phenomena due to the weak coupling between layers. Here we discover and investigate the origin of 1D moiré stripes on the surface of Bi₂Se₃ TI thin films and nanobelts. Scanning tunneling microscopy and high-resolution transmission electron microscopy reveal a unidirectional strained top layer, in the range 14-25%, with respect to the relaxed bulk structure, which cannot be ascribe

SUBMITTER: Salvato M 

PROVIDER: S-EPMC9527797 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature