Spin gap and resonance at the nesting wave vector in superconducting FeSe0.4Te0.6

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dc.contributor.author Qiu, Yiming
dc.contributor.author Bao, Wei
dc.contributor.author Zhao, Y.
dc.contributor.author Broholm, C.
dc.contributor.author Stanev, V.
dc.contributor.author Tesanovic, Z.
dc.contributor.author Gasparovic, Y.C.
dc.contributor.author Chang, S.
dc.contributor.author Hu, Jin
dc.contributor.author Qian, Bin
dc.contributor.author Fang, Minghu
dc.contributor.author Mao, Zhiqiang
dc.date.accessioned 2009-12-29T18:19:21Z
dc.date.available 2009-12-29T18:19:21Z
dc.date.issued 2009-08-07
dc.identifier.citation Source: Physical Review Letters 7 Aug. 2009, vol.103, no.6, 067008 (4 pp. en
dc.identifier.uri http://jhir.library.jhu.edu/handle/1774.2/33732
dc.description.abstract Neutron 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.description.provenance Submitted by Susan Vazakas (svazakas@jhu.edu) on 2009-12-29T16:05:39Z No. of bitstreams: 1 Broholm Spin gap 2009.pdf: 553467 bytes, checksum: 3bd6a4b17e68555df0ca9dd0bbcdc560 (MD5) en
dc.description.provenance Approved for entry into archive by David Reynolds(davidr@jhu.edu) on 2009-12-29T18:19:21Z (GMT) No. of bitstreams: 1 Broholm Spin gap 2009.pdf: 553467 bytes, checksum: 3bd6a4b17e68555df0ca9dd0bbcdc560 (MD5) en
dc.description.provenance Made available in DSpace on 2009-12-29T18:19:21Z (GMT). No. of bitstreams: 1 Broholm Spin gap 2009.pdf: 553467 bytes, checksum: 3bd6a4b17e68555df0ca9dd0bbcdc560 (MD5) Previous issue date: 2009-08-07 en
dc.language.iso en_US en
dc.publisher American Physical Society en
dc.subject spin resonance en
dc.subject spin gap en
dc.subject nesting wave vector en
dc.subject tellurium alloys en
dc.subject selenium alloys en
dc.subject probe magnetic excitations en
dc.subject low energy spin fluctuations en
dc.subject magnetic ordering en
dc.subject normal state continuum en
dc.subject neutron diffraction en
dc.subject iron alloys en
dc.subject Fermi surface en
dc.subject bound states en
dc.subject imperfect quasi 2D Fermi surface nesting en
dc.subject superconductivity en
dc.subject FeSe0.4Te0.6Jk en
dc.title Spin gap and resonance at the nesting wave vector in superconducting FeSe0.4Te0.6 en
dc.type Article en

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