37 citations · 112 across the 13 of their papers we have counts for
13 papers
Influence of Electrons on the Electronic Band Structure of Rare-Earth Nickelates
Andrzej Ptok, Surajit Basak, Przemysław Piekarz +1
Recently, superconductivity was discovered in the infinite layer of hole-doped nickelates NdNiO. Contrary to this, superconductivity in LaNiO is still under debate. Thi…
Density functional theory study of experimentally observed Au/Ge interfaces
Olga Sikora, Małgorzata Sternik, Benedykt R. Jany +3
In recent years, nanostructures with hexagonal polytypes of gold have been synthesised, opening new possibilities in nanoscience and technology. As bulk gold crystallizes in the \t…
Topology of chalcogen chains
Adam Kłosiński, Wojciech Brzezicki, Alexander Lau +4
We investigate the topological properties of the helical atomic chains occurring in elemental selenium and tellurium. We postulate a realistic model that includes spin-orbit intera…
Orbital liquid in the orbital Hubbard model in dimensions
Louis Felix Feiner, Andrzej M. Oleś
We demonstrate that the three-dimensional orbital Hubbard model can be generalized to arbitrary dimension , and that the form of the result is determined uniquely by the r…
Long-range order in the XY model on the honeycomb lattice
Jacek Wojtkiewicz, Krzysztof Wohlfeld, Andrzej M. Oleś
Using the reflection positivity method we provide the rigorous proof of the existence of long range magnetic order for the XY model on the honeycomb lattice for large spins $S\ge 2…
Hubbard subbands and superconductivity in the infinite-layer nickelate
Tharathep Plienbumrung, Maria Daghofer, Michael T. Schmid +1
An effective two-dimensional two-band model for infinite-layer nickelates consists of bands obtained from and --like orbitals. We investigate whether it could be m…
Screening in a two-band model for superconducting infinite-layer nickelate
Tharathep Plienbumrung, Maria Daghofer, Michael Schmid +1
Starting from an effective two-dimensional two-band model for infinite layered nickelates, consisting of bands obtained from and --like orbitals, we investigate to which ext…
Quantum Many-Body Scars in Spin-1 Kitaev Chains
Wen-Long You, Zhuan Zhao, Jie Ren +3
To provide a physical example of quantum scars, we study the many-body scars in the spin-1 Kitaev chain where the so-called PXP Hamiltonian is exactly embedded in the spectra. Rega…
Dynamical Study of the Origin of the Charge Density Wave in VSb (K, Rb, Cs) Compounds
Andrzej Ptok, Aksel Kobiałka, Małgorzata Sternik +4
Systems containing the ideal kagome lattice can exhibit several distinct and novel exotic states of matter. One example of such systems is a recently discovered VSb…
On the Neglect of Local Coulomb Interaction on Oxygens in Perovskites Described by the Multi-band Model
K. Rościszewski, A. M. Oleś
On the example of TiO layer (such as realized in SrTiO) we study electronic structure of multi-band models describing transition metal perovskites. In agreement w…
Stripes and Pairing in High Temperature Superconductors
Andrzej M. Oleś
We review briefly several approaches used to investigate the stability of stripe phases in high temperature superconductors, where charge inhomogeneities arise from competing kinet…
Jahn-Teller Effect and Superexchange in Half-Doped Manganites
Olga Sikora, Andrzej M. Oles
We investigate the stability of the charge exchange (CE) phase within a microscopic model which describes a single plane as in LaSrMnO. The model includes Coulo…
Vertical and Diagonal Stripes in the Extended Hubbard Model
M. Raczkowski, B. Normand, A. M. Oles
We extend previous real-space Hartree-Fock studies of static stripe stability to determine the phase diagram of the Hubbard model with anisotropic nearest-neighbor hopping t, by va…