Neutron diffraction on antiferromagnetic ordering in single-crystal BaFe2As2

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dc.creatorSu, Y.
dc.creatorLink, P.
dc.creatorSchneidewind, A.
dc.creatorWolf, Th.
dc.creatorAdelmann, P.
dc.creatorXiao, Y.
dc.creatorMeven, M.
dc.creatorMittal, R.
dc.creatorRotter, M.
dc.creatorJohrendt, D.
dc.creatorBrueckel, Th.
dc.creatorLoewenhaupt, M.
dc.date2008-07-10
dc.date2008-12-07
dc.date.accessioned2026-07-07T12:38:04Z
dc.date.available2026-07-07T12:38:04Z
dc.descriptionNeutron diffraction experiments have been carried out on a Sn-flux grown BaFe2As2 single crystal, the parent compound of the A-122 family of FeAs-based high-Tc superconductors. A tetragonal to orthorhombic structural phase transition and a three dimensional long-range antiferromagnetic ordering of the iron moment, with a unique magnetic propagation wavevector k = (1, 0, 1), have been found to take place at ~90 K. The magnetic moments of iron are aligned along the long a axis in the low temperature orthorhombic phase (Fmmm with b<a<c). Our results thus demonstrate that the magnetic structure of BaFe2As2 single crystal is the same as those in other A-122 iron pnictides compounds. We argue that the tin incorporation in the lattice is responsible for a smaller orthorhombic splitting and lower Neel temperature T_N observed in the experiment.
dc.descriptionSubstantial changes have been made based on the results obtained from a new crystal
dc.identifierhttps://arxiv.org/abs/0807.1743
dc.identifierhttp://arxiv.org/abs/0807.1743
dc.identifierPhys. Rev. B 79, 064504 (2009)
dc.identifierdoi:10.1103/PhysRevB.79.064504
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/218624
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleNeutron diffraction on antiferromagnetic ordering in single-crystal BaFe2As2
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