We report an indication of dynamic superconducting domains with boundary supercurrents in intrinsic CsV3Sb5 flakes, showing a magnetic field-free superconducting diode effect, suggesting dynamic superconducting order domains in a spontaneous time-reversal symmetry-breaking background.
The critical current exhibits double-slit superconductivity interference patterns under external magnetic fields, modulated by thermal cycling. This implies a time-reversal symmetry-breaking superconducting order, opening avenues for exploring Majorana zero modes.
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