Orbital hybridization in kagome metal GdV${}_6$Sn${}_6$ revealed by resonant ARPES

Novel quantum materials have broad application prospects in spintronic devices and low-power-consumption devices. The kagome-type lattice has special corner-sharing triangle geometry, providing a rich platform to investigate the relationship of novel correlated topological states, geometry, and strong electron interactions. However, the orbital hybridization in the presence of flat band that originated from the electron localization due to the unique kagome lattice configuration is still unclear. Resonant-angle-resolved photoemission spectroscopy is utilized to study the valence band structures of a new vanadium-based kagome material GdV${}_6$Sn${}_6$, combined with density functional theory calculation. Herein, a significant hybridization between V3d and Sn5p electrons, which paves the way to understand the formation of long-range magnetic ordering of GdV${}_6$Sn${}_6$ and other kagome materials at low temperature, is unambiguously revealed in the results. (© 2023 Wiley‐VCH GmbH)