Orbital Ordering in ferromagnetic Lu2V2O7

Abstract

We have observed the orbital ordering in the ferromagnetic Mott-insulator Lu2V2O7 by the polarized neutron diffraction technique. The orbital ordering pattern determined from the observed magnetic form factors can be explained in terms of a linear combination of wave functions |yz>, |zx> and |xy>; |0> = (1/3)^(1/2) |xy> + (1/3)^(1/2)|yz> + (1/3)^(1/2) |zx> which is proportional to |(x + y + z)^2 - r^2>; where each orbital is extended toward the center-of-mass of the V tetrahedron. We discuss the stability of the ferromagnetic Lu2V2O7, using a Hubbard Hamiltonian with these three orbitals.

17pages. to be published in J. Phys. Soc. Jpn. 74 (2005)

References in corpus (1)

• Magnetic Phase Transition of the Perovskite-type Ti Oxides

Cited by in corpus (13)

• Observation of the Magnon Hall Effect
• Topological Magnon Insulator in Insulating Ferromagnet
• Effect of lattice geometry on magnon Hall effect in ferromagnetic insulators
• Magnonic Weyl semimetal in pyrochlore ferromagnets
• Spin-Space Groups and Magnon Band Topology
• Spin wave spectrum of the quantum ferromagnet on the pyrochlore lattice Lu2V2O7
• Single-ion anisotropy, Dzyaloshinskii-Moriya interaction and negative magnetoresistance of the spin-1/2 pyrochlores R2V2O7
• $ab$-$initio$ Approaches for Low-Energy Spin Hamiltonians
• Synthesis, Structure, and Ferromagnetism of a New Oxygen Defect Pyrochlore System Lu2V2O_{7-x} (x = 0.40-0.65)
• Asymmetric Ferromagnetic Criticality in Pyrochlore Ferromagnet Lu${}_2$V${}_2$O${}_7$
• Orbital degeneracy and Mott transition in Mo pyrochlore oxides
• Microscopic theory of Dzyaloshinsky-Moriya interaction in pyrochlore oxides with spin-orbit coupling
• Orbital Mott transition in two dimensional Pyrochlore lattice