t2g-orbital model on a honeycomb lattice: application to antiferromagnet SrRu2O6

Abstract

Motivated by the recent discovery of high temperature antiferromagnet SrRu${}_2$O${}_6$ and its potential to be the parent of a new superconductor, we construct a minimal $t_{2g}$-orbital model on a honeycomb lattice to simulate its low energy band structure. Local Coulomb interaction is taken into account through both random phase approximation and mean field theory. Experimentally observed Antiferromagnetic order is obtained in both approximations. In addition, our theory predicts that the magnetic moments on three $t_{2g}$-orbitals are non-collinear as a result of the strong spin-orbit coupling of Ru atoms.

5 pages, 5 figures

References in corpus (7)

• The electronic properties of graphene
• Flat bands and Wigner crystallization in the honeycomb optical lattice
• A minimal two-band model for the superconducting Fe-pnictides
• Orbital analogue of quantum anomalous Hall effect in $p$-band systems
• Spin Density Wave Fluctuations and p-wave Pairing in Sr2RuO4
• Electronic structure and the origin of the high ordering temperature in SrRu2O6
• Site-Selective Mott Transition in a Quasi-One-Dimensional Vanadate V6O13

Cited by in corpus (7)

• Itinerant Antiferromagnetism in RuO${}_2$
• Antiferromagnetism at T > 500 K in the Layered Hexagonal Ruthenate SrRu2O6
• Localized itinerant electrons and unique magnetic properties of SrRu2O6
• Spectroscopic signatures of molecular orbitals on a honeycomb lattice
• Strain-induced topological transition in SrRu${}_2$O${}_6$ and CaOs${}_2$O${}_6$
• Magnetic and electronic ordering phenomena in the [Ru${}_2$O${}_6$] honeycomb lattice compound AgRuO${}_3$
• High temperature antiferromagnetism in ultrathin SrRu2O6 nanosheets