Canted ferromagnetism in RuSr${}_2$GdCu${}_2$O${}_8$

Abstract

First principles calculations using the full-potential linearized augmented plane wave (FLAPW) method including intra-atomic noncollinear magnetism have been performed to determine the magnetic structures of RuSr${}_2$GdCu${}_2$O${}_8$. The magnetism clearly arises from the RuO${}_6$ octahedra where the moments on neighboring Ru sites order antiferromagnetically but cant perpendicular to the AFM axis - and so induce a weak ferromagnetism. The projected Ru moments along the AFM and FM axes result in magnetic moments of 1.16 and 0.99 ${\mu }_B$ respectively. The results are consistent with the possible coexistence of canted ferromagnetism and superconductivity in the RuSr${}_2$GdCu${}_2$O${}_8$ - inferred from experiments.

4pages, 3 figures

Cited by in corpus (6)

• Spin Rotation Technique for Non-Collinear Magnetic Systems: Application to the Generalized Villain Model
• The Ruthenocuprates - Natural Superconductor-Ferromagnet Multilayers
• The magnetic state of 1212-type ruthenocuprate in magnetocaloric and magnetoresistivity measurements of polycrystalline samples of RuSr2Gd1-xCexCu2O8 and Ru1-xSr2GdCu2O8
• Reduction of Pauli paramagnetic pair-breaking effect in antiferromagnetic superconductors
• Nonlinear magnetic response in ruthenocuprates
• Spin Dynamics of a Canted Antiferromagnet in a Magnetic Field