Fig. 1. Measurement configuration of c-axis resistivity and characterization on superconductivity.

a The c-axis resistivity of CsV₃Sb₅ is measured by using a Corbino-shape-like electrode configuration. The electric current is applied mainly along c-axis of the single crystal, and the magnetic field is applied parallel to and rotated in the ab-plane. Single crystals usually have naturally formed edges with the angle of about 120° for neighboured edges, and these edges are along directions of crystallographic axes (see Supplementary Note 2). b Temperature-dependent magnetization measured with the zero-field-cooling (ZFC) and the field-cooling (FC) modes. c Temperature dependence of c-axis and in-plane resistivity which are measured with different configurations (Supplementary Fig. 3). Temperature dependence of in-plane (d) and c-axis (e) resistivity measured near the superconducting transition temperature at different magnetic fields.