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dc.contributor.authorStock, C.
dc.contributor.authorBroholm, C.
dc.contributor.authorHudis, J.
dc.contributor.authorKang, H.J.
dc.contributor.authorPetrovic, C.
dc.date.accessioned2009-12-29T18:28:36Z
dc.date.available2009-12-29T18:28:36Z
dc.date.issued2008-02-29
dc.identifier.citationPhysical Review Letters 29 Feb. 2008, vol.100, no.8, pp. 087001-1-4en
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/33736
dc.description.abstractNeutron scattering is used to probe antiferromagnetic spin fluctuations in the d-wave heavy fermion superconductor CeCoIn5 (Tc=2.3 K). Superconductivity develops from a state with slow (ℎΓ=0.3±0.15 meV) commensurate [Q0=(1/2,1/2,1/2)] antiferromagnetic spin fluctuations and nearly isotropic spin correlations. The characteristic wave vector in CeCoIn5 is the same as CeIn3 but differs from the incommensurate wave vector measured in antiferromagnetically ordered CeRhIn5. A sharp spin resonance (ℎΓ<0.07 meV) at ℎω=0.60±0.03 meV develops in the superconducting state removing spectral weight from low-energy transfers. The presence of a resonance peak is indicative of strong coupling between f-electron magnetism and superconductivity and consistent with a d-wave gap order parameter satisfying Δ(q+Q0)=-Δ(q).en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.subjectspin resonanceen
dc.subjectneutron scatteringen
dc.subjectindium alloysen
dc.subjectheavy fermion superconductorsen
dc.subjectd-wave superconductivityen
dc.subjectcommensurate antiferromagnetic spin fluctuationsen
dc.subjectisotropic spin correlationsen
dc.subjectincommensurate wave vectoren
dc.subjectcobalt alloysen
dc.subjectcerium alloysen
dc.subjectantiferromagnetismen
dc.subjectspectral weighten
dc.subjectlow-energy transfersen
dc.subjectf-electron magnetismen
dc.subjectd-wave gap order parameteren
dc.titleSpin resonance in the d-wave superconductor CeCoIn5en
dc.typeArticleen


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