Probing the superconducting gap symmetry of PrRu$_{4}$Sb$_{12}$: A comparison with PrOs$_{4}$Sb$_{12}$

Elbert E. M. Chia; M. B. Salamon; H. Sugawara; H. Sato

doi:10.1103/PhysRevB.69.180509

paper

Probing the superconducting gap symmetry of PrRu $_{4}$ Sb $_{12}$ : A comparison with PrOs $_{4}$ Sb $_{12}$

arXiv:cond-mat/0402610 · doi:10.1103/PhysRevB.69.180509

Abstract

We report measurements of the magnetic penetration depth $λ$ in single crystals of PrRu $_{4}$ Sb $_{12}$ down to 0.1 K. Both $λ$ and superfluid density $ρ_{s}$ exhibit an exponential behavior for $T$ $<$ 0.5 $T_{c}$ , with parameters $Δ$ (0)/\textit{k} $_{B}$ \textit{T} $_{c}$ = 1.9 and $λ (0)$ = 2900 Å. The value of $Δ$ (0) is consistent with the specific-heat jump value of $Δ C / γ T_{c}$ = 1.87 measured elsewhere, while the value of $λ (0)$ is consistent with the measured value of the electronic heat-capacity coefficient $γ$ . Our data are consistent with PrRu $_{4}$ Sb $_{12}$ being a moderate-coupling, fully-gapped superconductor. We suggest experiments to study how the nature of the superconducting state evolves with increasing Ru substitution for Os.

Probing the superconducting gap symmetry of PrRu $_{4}$ Sb $_{12}$ : A comparison with PrOs $_{4}$ Sb $_{12}$

Abstract

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Cited by in corpus (21)

Probing the superconducting gap symmetry of PrRu4​Sb12​: A comparison with PrOs4​Sb12​

Abstract

References in corpus (11)

Cited by in corpus (21)

Probing the superconducting gap symmetry of PrRu $_{4}$ Sb $_{12}$ : A comparison with PrOs $_{4}$ Sb $_{12}$