Direct comparison of magnetic penetration depth in kagome superconductors AV3Sb5 (A=Cs, K, Rb)
Austin R. Kaczmarek, Andrea Capa Salinas, Stephen D. Wilson, Katja C. Nowack
DOI 10.1103/6ztt-34xc · Physical Review Materials
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
We report measurements of the local temperature-dependent penetration depth, λ(T), in the kagome superconductors AV3Sb5 (A=Cs, K, Rb) using scanning superconducting quantum interference device microscopy. Our results suggest that the superconducting order in all three compounds is fully gapped, in contrast to reports of nodal superconductivity in KV3Sb5 and RbV3Sb5. Analysis of the temperature-dependent superfluid density, ρs(T), shows deviations from the behavior expected for a single isotropic gap, but the data are well described by models incorporating either a single anisotropic gap or two isotropic gaps. Notably, the temperature dependences of λ(T) and ρs(T) in KV3Sb5 and RbV3Sb5 are qualitatively more similar to each other than to CsV3Sb5, consistent with the superconducting phase-reflecting features of the normal-state band structure. Our findings provide a direct comparison of the superconducting properties across the AV3Sb5 family.
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. | 2.33 | Pressure unresolved | zero_resistance |
| KV3Sb5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.89 | Pressure unresolved | zero_resistance |
| RbV3Sb5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.74 | Pressure unresolved | zero_resistance |
Similar papers
Structural instability and charge modulations in the kagome superconductor AV3Sb5
similarity 0.96Zijin Ye et al.
Source status unknown — claims are unverified
Competition between charge-density-wave and superconductivity in the kagome metal RbV3Sb5
similarity 0.96N. N. Wang et al.
Source status unknown — claims are unverified
Weak electronic correlations in the kagome superconductor AV3Sb5 (A=K, Rb, Cs)
similarity 0.96Min Liu et al.
Source status unknown — claims are unverified
Surface-termination-dependent electronic states in kagome superconductors AV3Sb5 (A=K, Rb, Cs) studied by micro-ARPES
similarity 0.96Takemi Kato et al.
Source status unknown — claims are unverified
CsV3Sb5: A Z2 Topological Kagome Metal with a Superconducting Ground State
similarity 0.95Brenden R. Ortiz et al.
Source status unknown — claims are unverified
Complete miscibility amongst the AV3Sb5 kagome superconductors: Design of mixed A-site AV3Sb5 (A: K, Rb, Cs) alloys
similarity 0.95Brenden R. Ortiz et al.
Source status unknown — claims are unverified