Thermomodulated Intrinsic Josephson Effect in Kagome CsV3Sb5
Tian Le, Zhuokai Xu, Jinjin Liu, Ruiya Zhan, Zhiwei Wang, Xiao Lin
DOI 10.1103/yqth-sfm8 · Physical Review Letters
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Abstract
Superconducting chiral domains associated with a time-reversal symmetry-breaking order parameter have garnered significant attention in kagome systems. In this Letter, we demonstrate both the intrinsic direct-current and alternating-current Josephson effects in the nanoplates of the vanadium-based kagome material CsV3Sb5, as evidenced by Fraunhofer-like patterns and Shapiro steps. Moreover, both the Fraunhofer-like patterns and Shapiro steps are modulated by thermal cycling, suggesting that the Josephson effects arise from dynamic superconducting domains. These findings may provide new insights into chiral superconductivity in CsV3Sb5 and highlight the potential of these intrinsic Josephson junctions for applications in chiral superconductor-based quantum devices.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CsV3Sb5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.3 | Pressure not reported | onset |
| CsV3Sb5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.5 | Pressure not reported | zero_resistance |
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