Impurity Effect as a Probe for the Gap Function in the Filled Skutterudite Compound Superconductor PrOs$_{4}$Sb$_{12}$: Sb-NQR Study

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dc.creatorNishiyama, Masahide
dc.creatorKato, Takayuki
dc.creatorSugawara, Hitoshi
dc.creatorKikuchi, Daisuke
dc.creatorSato, Hideyuki
dc.creatorHarima, Hisatomo
dc.creatorZheng, Guo-qing
dc.date2006-08-31
dc.date.accessioned2026-07-07T07:19:54Z
dc.date.available2026-07-07T07:19:54Z
dc.descriptionWe have carried out nuclear quadrupole resonance (NQR) measurements in the filled skutterudite compounds Pr(Os$_{1-x}$Ru$_x$)$_4$Sb$_{12}$ ($x=0.1, 0.2$), in order to gain insights into the symmetry of the superconducting gap function. Upon replacing Os with Ru, the spin-lattice relaxation rate $1/T_1$ becomes proportional to temperature ($T$) at low $T$ far below $T_c$, and the magnitude of $(1/T_1T)_{low-T}$ increases with increasing Ru content. These results indicate that a finite density of states is induced at the Fermi level by the impurity, and thus suggest that there exist nodes in the gap function of PrOs$_{4}$Sb$_{12}$.
dc.description10 pages, with 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0608698
dc.identifierhttp://arxiv.org/abs/cond-mat/0608698
dc.identifierJ. Phys. Soc. Jpn 74, 15044 (2005)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/114797
dc.subjectSuperconductivity
dc.titleImpurity Effect as a Probe for the Gap Function in the Filled Skutterudite Compound Superconductor PrOs$_{4}$Sb$_{12}$: Sb-NQR Study
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