Evidence of d-wave pairing symmetry of the gap of the heavy-fermion superconductor CeIrIn5 from magnetic-penetration-depth measurements
D. Vandervelde, H. Q. Yuan, Y. Onuki, M. B. Salamon
DOI 10.1103/PhysRevB.79.212505 · Physical Review B
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Abstract
The heavy-Fermion compounds CeTIn5, where T is Co, Ir, or Rh, exhibit two distinct superconducting regimes upon tuning the lattice density via doping or pressure. CeIrIn5 is close to the boundary and there is some disagreement on whether its superconducting state is the same as CeCoIn5 or not. In this Brief Report, we report the low-temperature penetration-depth λ(T) measurements for CeIrIn5. That λ(T)∝T below 0.3Tc, irrespective of sample orientation, confirms the existence of line nodes in the gap with no evidence for the point node proposed in a hybrid-gap structure.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.4 | Pressure not reported | unknown |
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.44 | Pressure not reported | onset |
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.3 | Pressure not reported | unknown |
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