Unconventional superconductivity in the cage-type compound Sc5Rh6Sn18
A. Bhattacharyya, D. T. Adroja, N. Kase, A. D. Hillier, A. M. Strydom, J. Akimitsu
DOI 10.1103/PhysRevB.98.024511 · Physical Review B
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 have examined the superconducting ground-state properties of the caged-type compound Sc5Rh6Sn18 using magnetization, heat capacity, and muon-spin relaxation or rotation (μSR) measurements. Magnetization measurements indicate type-II superconductivity with an upper critical field of μ0Hc2(0)=7.24T. The zero-field-cooled and field-cooled susceptibility measurements unveil the onset of a diamagnetic signal below Tc=4.4K. The interpretation of the heat-capacity results below Tc using the α−BCS model unveils the value of α=2.65, which gives the dimensionless ratio 2Δ(0)/kBTc=5.3, intimating that Sc5Rh6Sn18 is a strong-coupling BCS superconductor. The zero-field μSR measurements in the longitudinal geometry exhibit a signature of the spontaneous appearance of the internal magnetic field below the superconducting transition temperature, indicating that the superconducting state is characterized by the broken time-reversal symmetry (TRS). We have compared the results of broken TRS in Sc5Rh6Sn18 with that observed in R5Rh6Sn18(R=Lu and Y).
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sc5Rh6Sn18 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | Pressure not reported | onset |
| Sc5Rh6Sn18 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | Pressure not reported | onset |
| Sc5Rh6Sn18 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | Pressure not reported | onset |
| Y5Rh6Sn18 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3 | Pressure not reported | unknown |
| Lu5Rh6Sn18 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4 | Pressure not reported | unknown |
| Tm5Rh6Sn18 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.2 | Pressure not reported | unknown |
| PrOs4Sb12 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.82 | Pressure not reported | onset |
| PrV2Al20 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.05 | Pressure unresolved | unknown |
Similar papers
Nodeless superconductivity in the cage-type superconductor Sc5Ru6Sn18 with preserved time-reversal symmetry
similarity 0.95D. Kumar et al. · 2018 · arXiv:1807.06213
Source status unknown — claims are unverified
Effect of physical and chemical pressure on the superconductivity of cage-type compound Lu5Rh6Sn18
similarity 0.95Chao Xiong et al.
Source status unknown — claims are unverified
Broken time-reversal symmetry probed by muon spin relaxation in the caged type superconductor Lu5Rh6Sn18
similarity 0.95A. Bhattacharyya et al.
Source status unknown — claims are unverified
Two-band superconductivity with weak interband coupling in structurally disordered Y5Rh6Sn18
similarity 0.94J. Juraszek et al.
Source status unknown — claims are unverified
Conventional isotropic s-wave superconductivity with strong electron-phonon coupling in Sc5Rh6Sn18
similarity 0.94Manuel Feig et al.
Source status unknown — claims are unverified
Magnetic field induced reentrance of superconductivity in the cage-type superconductor Y5Rh6Sn18
similarity 0.94M. Fijałkowski et al.
Source status unknown — claims are unverified