Commensurate Spin Density Wave in LaOFeAs: A Local Probe Study

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dc.creatorKlauss, H. -H.
dc.creatorLuetkens, H.
dc.creatorKlingeler, R.
dc.creatorHess, C.
dc.creatorLitterst, F. J.
dc.creatorKraken, M.
dc.creatorKorshunov, M. M.
dc.creatorEremin, I.
dc.creatorDrechsler, S. -L.
dc.creatorKhasanov, R.
dc.creatorAmato, A.
dc.creatorHamann-Borreo, J.
dc.creatorLeps, N.
dc.creatorKondrat, A.
dc.creatorBehr, G.
dc.creatorWerner, J.
dc.creatorBuechner, B.
dc.date2008-05-02
dc.date2008-08-28
dc.date.accessioned2026-07-07T09:58:36Z
dc.date.available2026-07-07T09:58:36Z
dc.descriptionWe present a detailed study on the magnetic order in the undoped mother compound LaOFeAs of the recently discovered Fe-based superconductor LaO$_{1-x}$F$_x$FeAs. In particular, we present local probe measurements of the magnetic properties of LaOFeAs by means of $^{57}$Fe Mössbauer spectroscopy and muon spin relaxation in zero external field along with magnetization and resistivity studies. These experiments prove a commensurate static magnetic order with a strongly reduced ordered moment of 0.25(5) $μ_B$ at the iron site below T_N = 138 K, well separated from a structural phase transition at T_N = 156 K. The temperature dependence of the sublattice magnetization is determined and compared to theory. Using a four-band spin density wave model both, the size of the order parameter and the quick saturation below T_N are reproduced.
dc.description5 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0805.0264
dc.identifierhttp://arxiv.org/abs/0805.0264
dc.identifierPhys. Rev. Lett. 101, 077005 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.077005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/167775
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleCommensurate Spin Density Wave in LaOFeAs: A Local Probe Study
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