68 citations · 158 across the 3 of their papers we have counts for
4 papers · 1 filter
Orbital order in vanadium spinels
S. Di Matteo, G. jackeli, N. B. Perkins
Motivated by recent theoretical and experimental controversy, we present a theoretical study to clarify the orbital symmetry of the ground state of vanadium spinel oxides AVO$_…
Valence-Bond Crystal, and Lattice Distortions in a Pyrochlore Antiferromagnet with Orbital Degeneracy
S. Di Matteo, G. Jackeli, N. B. Perkins
We discuss the ground state properties of a spin 1/2 magnetic ion with threefold orbital degeneracy on a highly frustrated pyrochlore lattice, like Ti ion in B-spin…
Valence bond crystal in a pyrochlore antiferromagnet with orbital degeneracy
S. Di Matteo, G. Jackeli, C. Lacroix +1
We discuss the ground state of a pyrochlore lattice of threefold-orbitally-degenerate magnetic ions. We derive an effective spin-orbital Hamiltonian and show that the orbit…
Spin wave dispersion softening in the ferromagnetic Kondo lattice model for manganites
F. Mancini, N. B. Perkins, N. M. Plakida
Spin dynamics is calculated in the ferromagnetic (FM) state of the generalized Kondo lattice model taking into account strong on-site correlations between e_g electrons and antifer…