Magnetic structure of RuSr2GdCu2O8 determined by resonant x-ray diffraction

X-ray diffraction with photon energies near the Ru L2-absorption edge was used to detect resonant reflections characteristic of a G-type superstructure in RuSr2GdCu2O8 single crystals. A polarization analysis confirms that these reflections are due to magnetic order of Ru moments, and the azimuthal-...

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Bibliographic Details
Published in:Physical review letters 2009-01, Vol.102 (3), p.037205-037205
Main Authors: Bohnenbuck, B, Zegkinoglou, I, Strempfer, J, Nelson, C S, Wu, H-H, Schübler-Langeheine, C, Reehuis, M, Schierle, E, Leininger, Ph, Herrmannsdörfer, T, Lang, J C, Srajer, G, Lin, C T, Keimer, B
Format: Article
Language:English
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Summary:X-ray diffraction with photon energies near the Ru L2-absorption edge was used to detect resonant reflections characteristic of a G-type superstructure in RuSr2GdCu2O8 single crystals. A polarization analysis confirms that these reflections are due to magnetic order of Ru moments, and the azimuthal-angle dependence of the scattering amplitude reveals that the moments lie along a low-symmetry axis with substantial components parallel and perpendicular to the RuO2 layers. Complemented by susceptibility data and a symmetry analysis of the magnetic structure, these results reconcile many of the apparently contradictory findings reported in the literature.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.102.037205