Magnetic-Flux Tuning of Second Harmonic Content in Intrinsic CsV3Sb5 Josephson Junction
Jing-Jing Chen, Han-Xin Lou, Xing-Guo Ye, Zhen-Bing Tan, An-Qi Wang, Zhen-Tao Zhang, Yu-Xuan Wang, Xin Liao, Zhen-Sheng Zhang, Zhi-Min Liao, Da-Peng Yu
DOI 10.1103/34th-gqsy · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The current phase relation (CPR) determines the electromagnetic response of Josephson junctions in superconducting circuits. It is sensitive to the weak link materials and interface quality. In this work, we report the intrinsic Josephson effect originating from domains in the single-crystal kagome superconductor CsV3Sb5, where no artificial weak links were introduced. By tuning the magnetic flux, we observe the Josephson diode effect and clear half-integer Shapiro steps. The quantitative analysis reveals a significantly enhanced second harmonic content in the CPR, exceeding the ballistic limit of a single Andreev Josephson junction. Such a pronounced second harmonic component is attributed to the nonuniformity of the current distribution and the nonsinusoidal CPR in highly transparent intrinsic Josephson junctions. The intrinsic Josephson junction formed at the domain wall shows the potential application for superconducting quantum technologies.
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. | 3.7 | Pressure not reported | onset |
| CsV3Sb5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.1 | Pressure not reported | zero_resistance |
Similar papers
Thermomodulated Intrinsic Josephson Effect in Kagome CsV3Sb5
similarity 0.95Tian Le et al.
Source status unknown — claims are unverified
Switchable chiral pair density wave in pure CsV3Sb5
similarity 0.93Wei Song et al.
Source status unknown — claims are unverified
Magneto-Seebeck effect and ambipolar Nernst effect in the CsV3Sb5 superconductor
similarity 0.92Yuhan Gan et al.
Source status unknown — claims are unverified
Revealing the competition between charge density wave and superconductivity in CsV3Sb5 through uniaxial strain
similarity 0.92Tiema Qian et al.
Source status unknown — claims are unverified
Local pairing versus bulk superconductivity intertwined by the charge density wave order in Cs(V1−xTax)3Sb5
similarity 0.92Jinyulin Li et al.
Source status unknown — claims are unverified
Enhancement of superconductivity and suppression of charge-density wave in As-doped CsV3Sb5
similarity 0.92Yi Liu et al.
Source status unknown — claims are unverified