Microwave Penetration Depth and Quasiparticle Conductivity in PrFeAsO_1-y Single Crystals : Evidence for a Full-Gap Superconductor

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dc.creatorHashimoto, K.
dc.creatorShibauchi, T.
dc.creatorKato, T.
dc.creatorIkada, K.
dc.creatorOkazaki, R.
dc.creatorShishido, H.
dc.creatorIshikado, M.
dc.creatorKito, H.
dc.creatorIyo, A.
dc.creatorEisaki, H.
dc.creatorShamoto, S.
dc.creatorMatsuda, Y.
dc.date2008-06-19
dc.date2008-12-11
dc.date.accessioned2026-07-07T12:24:18Z
dc.date.available2026-07-07T12:24:18Z
dc.descriptionIn-plane microwave penetration depth $λ_{ab}$ and quaiparticle conductivity at 28 GHz are measured in underdoped single crystals of the Fe-based superconductor PrFeAsO$_{1-y}$ ($T_c\approx 35$ K) by using a sensitive superconducting cavity resonator. $λ_{ab}(T)$ shows flat dependence at low temperatures, which is incompatible with the presence of nodes in the superconducting gap $Δ({\bf k})$. The temperature dependence of the superfluid density demonstrates that the gap is non-zero ($Δ/k_BT_c\gtrsim 1.6$) all over the Fermi surface. The microwave conductivity below $T_c$ exhibits an enhancement larger than the coherence peak, reminiscent of high-$T_c$ cuprate superconductors.
dc.description4 pages, 3 figures. Version accepted for publication in Phys. Rev. Lett. For related results of hole-doped 122 system, see arXiv:0810.3506
dc.identifierhttps://arxiv.org/abs/0806.3149
dc.identifierhttp://arxiv.org/abs/0806.3149
dc.identifierPhys. Rev. Lett. 102, 017002 (2009).
dc.identifierdoi:10.1103/PhysRevLett.102.017002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214282
dc.subjectSuperconductivity
dc.titleMicrowave Penetration Depth and Quasiparticle Conductivity in PrFeAsO_1-y Single Crystals : Evidence for a Full-Gap Superconductor
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