Observation of kagome-like bands in two-dimensional semiconducting Cr₈Se₁₂.

ABSTRACT: The kagome lattice is a versatile platform for investigating correlated electronic states. However, its realization in two-dimensional (2D) semiconductors for tunable device applications is still challenging. An alternative strategy to create kagome-like bands is to realize a coloring-triangle (CT) lattice in semiconductors through a distortion of a modified triangular lattice. Here, we report the observation of low-energy kagome-like bands in a semiconducting 2D transition metal chalcogenide-Cr₈Se₁₂ with a thickness of 7 atomic layers-which exhibits a CT lattice and a bandgap of 0.8 eV. The Cr-deficient layer beneath the topmost Se-full layer is partially occupied with 2/3 occupancy, yielding a √3 × √3 Cr honeycomb network. Angle-resolved photoemission spectroscopy m

SUBMITTER: Duan S 

PROVIDER: S-EPMC11484974 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature