Electronic nature of chiral charge order in the kagome superconductor Cs V 3 Sb 5

CsV${}_{3}$Sb${}_{5}$ has been recently discovered to be a kagome superconductor. Here, the authors use scanning tunneling microscopy to study its charge order and superconductivity at the atomic scale. Through mapping the energy gap of the charge order, the authors identify its chiral electronic nature. They also elucidate the surface nature of the 1$\ifmmode\times\else\texttimes\fi{}$4 superlattice and superconducting excitations.