Magnetic and structural transitions in layered FeAs systems: AFe2As2 versus RFeAsO compounds

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dc.creatorKrellner, C.
dc.creatorCaroca-Canales, N.
dc.creatorJesche, A.
dc.creatorRosner, H.
dc.creatorOrmeci, A.
dc.creatorGeibel, C.
dc.date2008-06-05
dc.date.accessioned2026-07-07T10:00:33Z
dc.date.available2026-07-07T10:00:33Z
dc.descriptionResistivity, specific heat and magnetic susceptibility measurements performed on SrFe2As2 samples evidence a behavior very similar to that observed in LaFeAsO and BaFe2As2 with the difference that the formation of the SDW and the lattice deformation occur in a pronounced first order transition at T_0=205K. Comparing further data evidences that the Fe-magnetism is stronger in SrFe2As2 and in EuFe2As2 than in the other layered FeAs systems investigated up to now. Full potential LDA band structure calculations confirm the large similarity between the compounds, especially for the relevant low energy Fe 3d states. The relation between structural details and magnetic order is analyzed.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0806.1043
dc.identifierhttp://arxiv.org/abs/0806.1043
dc.identifierPhys. Rev. B 78, 100504(R), 2008
dc.identifierdoi:10.1103/PhysRevB.78.100504
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/168352
dc.subjectSuperconductivity
dc.subjectMaterials Science
dc.titleMagnetic and structural transitions in layered FeAs systems: AFe2As2 versus RFeAsO compounds
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