Atomically engineering interlayer symmetry operations of two-dimensional crystals.

ABSTRACT: Crystal symmetry, which governs the local atomic coordination and bonding environment, is one of the paramount constituents that intrinsically dictate materials' functionalities. However, engineering crystal symmetry is not straightforward due to the isotropically strong covalent/ionic bonds in crystals. Layered two-dimensional materials offer an ideal platform for crystal engineering because of the ease of interlayer symmetry operations. However, controlling the crystal symmetry remains challenging due to the ease of gliding perpendicular to the Z direction. Herein, we proposed a substrate-guided growth mechanism to atomically fabricate AB'-stacked SnSe₂ superlattices, containing alternating SnSe₂ slabs with periodic interlayer mirror and gliding symmetry operations,

SUBMITTER: Han Z 

PROVIDER: S-EPMC11686199 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature