Strong coupling between magnetic and structural order parameters in SrFe2As2

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dc.creatorJesche, A.
dc.creatorCaroca-Canales, N.
dc.creatorRosner, H.
dc.creatorBorrmann, H.
dc.creatorOrmeci, A.
dc.creatorKasinathan, D.
dc.creatorKaneko, K.
dc.creatorKlauss, H. H.
dc.creatorLuetkens, H.
dc.creatorKhasanov, R.
dc.creatorAmato, A.
dc.creatorHoser, A.
dc.creatorKrellner, C.
dc.creatorGeibel, C.
dc.date2008-07-03
dc.date.accessioned2026-07-07T10:17:53Z
dc.date.available2026-07-07T10:17:53Z
dc.descriptionX-ray and Neutron diffraction as well as muon spin relaxation and Mössbauer experiments performed on SrFe$_2$As$_2$ polycrystalls confirm a sharp first order transition at $T_0 = 205$,K corresponding to an orthorhombic phase distortion and to a columnar antiferromagnetic Fe ordering with a propagation vector (1,0,1), and a larger distortion and larger size of the ordered moment than reported for BaFe$_2$As$_2$. The structural and the magnetic order parameters present an remarkable similarity in their temperature dependence from $T_0$ down to low temperatures, showing that both phenomena are intimately connected. Accordingly, the size of the ordered Fe moments scale with the lattice distortion when going from SrFe$_2$As$_2$ to BaFe$_2$As$_2$. Full-potential band structure calculations confirm that the columnar magnetic order and the orthorhombic lattice distortion are intrinsically tied to each other.
dc.description10 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0807.0632
dc.identifierhttp://arxiv.org/abs/0807.0632
dc.identifierPhys. Rev. B 78, 180504(R), 2008
dc.identifierdoi:10.1103/PhysRevB.78.180504
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/174009
dc.subjectSuperconductivity
dc.subjectMaterials Science
dc.titleStrong coupling between magnetic and structural order parameters in SrFe2As2
dc.typetext

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