99 citations · 817 across the 52 of their papers we have counts for
4 papers · 1 filter
Mechanism of hole propagation in the orbital compass models
Wojciech Brzezicki, Maria Daghofer, Andrzej M. Oleś
We explore the propagation of a single hole in the quantum compass model, whose nematic ground state is given by mutually decoupled antiferromagnetic chains. The compass model can…
Topological Order in an Entangled SU(2)XY Spin-Orbital Ring
Wojciech Brzezicki, Jacek Dziarmaga, Andrzej M. Oleś
We present rigorous topological order which emerges in a one-dimensional spin-orbital model due to the ring topology. Although an exact solution of a spin-orbital ring with SU(2) s…
Symmetry properties and spectra of the two-dimensional quantum compass model
Wojciech Brzezicki, Andrzej M. Oleś
We use exact symmetry properties of the two-dimensional quantum compass model to derive nonequivalent invariant subspaces in the energy spectra of clusters up to L=6. T…
Exotic spin orders driven by orbital fluctuations in the Kugel-Khomskii model
Wojciech Brzezicki, Jacek Dziarmaga, Andrzej M. Oleś
We study zero temperature phase diagram of the three-dimensional Kugel-Khomskii model on a cubic lattice using the cluster mean field theory and different perturbative expansions i…