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dc.contributor.authorQiu, Yiming
dc.contributor.authorBao, Wei
dc.contributor.authorZhao, Y.
dc.contributor.authorBroholm, C.
dc.contributor.authorStanev, V.
dc.contributor.authorTesanovic, Z.
dc.contributor.authorGasparovic, Y.C.
dc.contributor.authorChang, S.
dc.contributor.authorHu, Jin
dc.contributor.authorQian, Bin
dc.contributor.authorFang, Minghu
dc.contributor.authorMao, Zhiqiang
dc.date.accessioned2009-12-29T18:19:21Z
dc.date.available2009-12-29T18:19:21Z
dc.date.issued2009-08-07
dc.identifier.citationSource: Physical Review Letters 7 Aug. 2009, vol.103, no.6, 067008 (4 pp.en_US
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/33732
dc.description.abstractNeutron scattering is used to probe magnetic excitations in FeSe0.4Te0.6 (Tc = 14 K). Low energy spin fluctuations are found with a characteristic wave vector (1212L) that corresponds to Fermi surface nesting and differs from Qm = (δ012) for magnetic ordering in Fe1+yTe. A spin resonance with ℎΩ0 = 6.51(4) meV ≈ 5.3kBTc and ℎΓ = 1.25(5) meV develops in the superconducting state from a normal state continuum. We show that the resonance is consistent with a bound state associated with s± superconductivity and imperfect quasi-2D Fermi surface nesting.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.subjectspin resonanceen_US
dc.subjectspin gapen_US
dc.subjectnesting wave vectoren_US
dc.subjecttellurium alloysen_US
dc.subjectselenium alloysen_US
dc.subjectprobe magnetic excitationsen_US
dc.subjectlow energy spin fluctuationsen_US
dc.subjectmagnetic orderingen_US
dc.subjectnormal state continuumen_US
dc.subjectneutron diffractionen_US
dc.subjectiron alloysen_US
dc.subjectFermi surfaceen_US
dc.subjectbound statesen_US
dc.subjectimperfect quasi 2D Fermi surface nestingen_US
dc.subjectsuperconductivityen_US
dc.subjectFeSe0.4Te0.6Jken_US
dc.titleSpin gap and resonance at the nesting wave vector in superconducting FeSe0.4Te0.6en_US
dc.typeArticleen_US


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