Nodeless superconductivity in β−PdBi2
Jian Chen, An Wang, Guiming Pang, Hang Su, Ye Chen, Huiqiu Yuan
DOI 10.1103/PhysRevB.101.054514 · Physical Review B
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Abstract
The superconducting gap symmetry of β−PdBi2 is studied by measuring the London penetration depth Δλ(T) as well as the heat capacity CP(T,B). In the low temperature limit, both the penetration depth Δλ(T) and the electronic specific heat Ce(T)/T follow exponential-type temperature dependence, providing evidence for fully gapped superconductivity in this compound. Analysis of the superfluid density ρs(T) suggests single-gap s-wave superconductivity for β−PdBi2, which is further supported by the linear field dependence of the Sommerfeld coefficient γ0(B) determined in the superconducting state.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| β-PdBi2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.25 | Pressure not reported | unknown |
| α-PdBi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.8 | Pressure not reported | unknown |
| α-PdBi2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.7 | Pressure not reported | unknown |
| γ-Pd2.5Bi1.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.7 | Pressure not reported | unknown |
| PdBi2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.5 | Pressure not reported | onset |
| PdBi2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.48 | Pressure not reported | midpoint |
| PdBi2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.45 | Pressure not reported | unknown |
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