Discovery and construction of surface kagome electronic states induced by p-d electronic hybridization in Co₃Sn₂S₂.

ABSTRACT: Kagome-lattice materials possess attractive properties for quantum computing applications, but their synthesis remains challenging. Herein, based on the compelling identification of the two cleavable surfaces of Co₃Sn₂S₂, we show surface kagome electronic states (SKESs) on a Sn-terminated triangular Co₃Sn₂S₂ surface. Such SKESs are imprinted by vertical p-d electronic hybridization between the surface Sn (subsurface S) atoms and the buried Co kagome-lattice network in the Co₃Sn layer under the surface. Owing to the subsequent lateral hybridization of the Sn and S atoms in a corner-sharing manner, the kagome symmetry and topological electronic properties of the Co₃Sn layer is proximate to the Sn surface.

SUBMITTER: Huang L 

PROVIDER: S-EPMC10460379 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature