Show simple item record

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
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
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.subjectspin resonanceen
dc.subjectspin gapen
dc.subjectnesting wave vectoren
dc.subjecttellurium alloysen
dc.subjectselenium alloysen
dc.subjectprobe magnetic excitationsen
dc.subjectlow energy spin fluctuationsen
dc.subjectmagnetic orderingen
dc.subjectnormal state continuumen
dc.subjectneutron diffractionen
dc.subjectiron alloysen
dc.subjectFermi surfaceen
dc.subjectbound statesen
dc.subjectimperfect quasi 2D Fermi surface nestingen
dc.subjectsuperconductivityen
dc.subjectFeSe0.4Te0.6Jken
dc.titleSpin gap and resonance at the nesting wave vector in superconducting FeSe0.4Te0.6en
dc.typeArticleen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record