$^{75}$As NMR studies of superconducting LaO$_{0.9}$F$_{0.1}$FeAs

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dc.creatorGrafe, H. -J.
dc.creatorPaar, D.
dc.creatorLang, G.
dc.creatorCurro, N. J.
dc.creatorBehr, G.
dc.creatorWerner, J.
dc.creatorHamann-Borrero, J.
dc.creatorHess, C.
dc.creatorLeps, N.
dc.creatorKlingeler, R.
dc.creatorBuechner, B.
dc.date2008-05-16
dc.date2008-08-07
dc.date.accessioned2026-07-07T09:54:53Z
dc.date.available2026-07-07T09:54:53Z
dc.descriptionWe have performed 75As Nuclear Magnetic Resonance (NMR) measurements on aligned powders of the new LaO0.9F0.1FeAs superconductor. In the normal state, we find a strong temperature dependence of the spin shift and Korringa behavior of the spin lattice relaxation rate. In the superconducting state, we find evidence for line nodes in the superconducting gap and spin-singlet pairing. Our measurements reveal a strong anisotropy of the spin lattice relaxation rate, which suggest that superconducting vortices contribute to the relaxation rate when the field is parallel to the c-axis but not for the perpendicular direction.
dc.identifierhttps://arxiv.org/abs/0805.2595
dc.identifierhttp://arxiv.org/abs/0805.2595
dc.identifierPhys. Rev. Lett. 101, 047003 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.047003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/166486
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.title$^{75}$As NMR studies of superconducting LaO$_{0.9}$F$_{0.1}$FeAs
dc.typetext

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