68 citations · 214 across the 5 of their papers we have counts for
4 papers
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…
Frustrated antiferromagnets at high fields: the Bose-Einstein condensation in degenerate spectra
G. Jackeli, M. E. Zhitomirsky
Quantum phase transition at the saturation field is studied for a class of frustrated quantum antiferromagnets. The considered models include (i) the - frustrated square-…