Magnetic Structure of RuSr2GdCu2O8 Determined by Resonant X-Ray Diffraction
Abstract
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- January 2009
- DOI:
- 10.1103/PhysRevLett.102.037205
- arXiv:
- arXiv:0812.3024
- Bibcode:
- 2009PhRvL.102c7205B
- Keywords:
-
- 75.30.-m;
- 75.25.+z;
- 75.50.Ee;
- 78.70.Ck;
- Intrinsic properties of magnetically ordered materials;
- Spin arrangements in magnetically ordered materials;
- Antiferromagnetics;
- X-ray scattering;
- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Superconductivity
- E-Print:
- to appear in PRL