Probing the anomalous symmetry-breaking in kagome material CsV3Sb5 via third-order nonlinearity
The study used third-order nonlinear transport measurements in CsV3Sb5 to detect anomalous symmetry-breaking. The results showed stable signals up to room temperature, revealing two key transitions: a charge density wave (CDW) transition at 77 K and an anomalous symmetry-breaking state at 39 K. This technique successfully probes complex electronic states tied to the material's topological nature.