66 citations · 83 across the 3 of their papers we have counts for
9 papers · 1 filter
Polaron in the t-J Models with Three-Site Terms: the SU(2) and the Ising Cases
Krzysztof Wohlfeld
We compare the role of the three-site terms added to the t-J models in the SU(2) and the Ising cases in the extremely low doping regime, i.e. when a single hole added to the strong…
Reiter's polaron wavefunction applied to a orbital t-J model
Krzysztof Wohlfeld, Andrzej M. Oles, Maria Daghofer +1
Using the self-consistent Born approximation we calculate Reiter's wavefunction for a single hole introduced into the undoped and orbitally ordered ground state of the t-J model wi…
Spectral properties of orbital polarons in Mott insulators
Krzysztof Wohlfeld, Maria Daghofer, Andrzej M. Oles +1
We address the spectral properties of Mott insulators with orbital degrees of freedom, and investigate cases where the orbital symmetry leads to Ising-like superexchange in the orb…
Absence of Hole Confinement in Transition Metal Oxides with Orbital Degeneracy
M. Daghofer, K. Wohlfeld, A. M. Oles +2
We investigate the spectral properties of a hole moving in a two-dimensional Hubbard model for strongly correlated t_2g electrons. Although superexchange interactions are Ising-lik…
Origin of charge density wave in the coupled spin ladders in SrCaCuO
Krzysztof Wohlfeld, Andrzej M. Oles, George A. Sawatzky
We formulate a d-p multiband charge transfer model for CuO coupled spin ladders, relevant for CuO plane of SrCaCuO, and solve it using Ha…
Doped Spin Ladder: Zhang-Rice Singlets or Rung-centred Holes?
Krzysztof Wohlfeld
We formulate charge transfer model for a single doped spin ladder, relevant for the intrinsically doped plane of coupled spin ladders in SrCaCuO. Assumin…