Frieze charge-stripes in a correlated kagome superconductor CsCr₃Sb₅

The recently discovered kagome superconductor CsCr₃Sb₅ offers a unique opportunity to explore how strong correlations and geometric frustration interplay in a topological kagome lattice. Using spectroscopic-imaging scanning tunneling microscopy, we uncover a cascade of charge-ordered phases with distinct symmetries. Most strikingly, we identify a previously unknown electronic phase—a frieze charge-stripe order—characterized by unidirectional modulation that breaks all conventional mirror symmetries but preserves a mirror-glide operation. This symmetry pattern corresponds to one of the fundamental frieze groups. Combined real-space imaging, Fourier analysis, and theoretical modeling reveal that sublattice degrees of freedom and local chiral textures are essential to this order’s formation.