274 citations · 3.3k across the 96 of their papers we have counts for
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Origin of the Verwey transition in magnetite: Group theory, electronic structure, and lattice dynamics study
Przemyslaw Piekarz, Krzysztof Parlinski, Andrzej M. Oles
The Verwey phase transition in magnetite has been analyzed using the group theory methods. It is found that two order parameters with the symmetries and induce the stru…
Unidirectional d-wave superconducting domains in the two-dimensional t-J model
Marcin Raczkowski, Manuela Capello, Didier Poilblanc +2
Motivated by the recently observed pattern of unidirectional domains in high-T_c superconductors [Y. Kohsaka et al., Science 315, 1380 (2007)], we investigate the emergence of spon…
Spin-orbital entanglement near quantum phase transitions
Andrzej M. Oles, Peter Horsch, Giniyat Khaliullin
Spin-orbital entanglement in the ground state of a one-dimensional SU(2)SU(2) spin-orbital model is analyzed using exact diagonalization of finite chains. For spin…
One-dimensional orbital fluctuations and the exotic magnetic properties of YVO
Andrzej M. Oles, Peter Horsch, Giniyat Khaliullin
Starting from the Mott insulator picture for cubic vanadates, we derive and investigate the model of superexchange interactions between V ions, with nearly degenerate $t_{2g…
Orbital liquid in ferromagnetic manganites: The orbital Hubbard model for electrons
Louis Felix Feiner, Andrzej M. Oles
We have analyzed the symmetry properties and the ground state of an orbital Hubbard model with two orbital flavors, describing a partly filled spin-polarized band on a cubic…
Orbital correlations in monolayer manganites - From spin t-J model to orbital t-J model
M. Daghofer, A. M. Oles
On the example of monolayer manganites we show that the theoretical ideas developed long ago along the derivation of the spin t-J model from the Hubbard model are nowadays very hel…