41 citations · 632 across the 55 of their papers we have counts for
6 papers · 1 filter
Delayed onset and directionality of x-ray-induced atomic displacements observed on subatomic length scales
Ichiro Inoue, Victor Tkachenko, Konrad J. Kapcia +6
Transient structural changes of AlO on subatomic length scales following irradiation with an intense x-ray laser pulse (photon energy: 8.70 keV; pulse duration: 6 fs; fluen…
Charge-order on the triangular lattice: Effects of next-nearest-neighbor attraction in finite temperatures
Konrad Jerzy Kapcia
The extended Hubbard model in the atomic limit, which is equivalent to lattice fermionic gas, is considered on the triangular lattice. The model includes onsite Hubbard …
Thermodynamic and electromagnetic properties of the eta-pairing superconductivity in the Penson-Kolb model
Wojciech R. Czart, Konrad J. Kapcia, Roman Micnas +1
In the paper, we study the thermodynamic and electromagnetic properties of the Penson-Kolb (PK) model, i.e., the tight-binding model for fermionic particles with the pair-hopping i…
Charge-Order on the Triangular Lattice: A Mean-Field Study for the Lattice Fermionic Gas
Konrad Jerzy Kapcia
The adsorbed atoms exhibit tendency to occupy a triangular lattice formed by periodic potential of the underlying crystal surface. Such a lattice is formed by, e.g., a single layer…
Electronic and dynamical properties of CeRhAs: Role of RhAs layers and expected hidden orbital order
Andrzej Ptok, Konrad J. Kapcia, Paweł T. Jochym +3
Recently discovered heavy fermion CeRhAs compound crystallizes in the nonsymmorphic symmetry, which enables the occurrence of topological protection. Experimen…
Extended Falicov-Kimball model at weak onsite and intersite Coulomb interactions
K. J. Kapcia, J. Krawczyk, R. Lemański
We analyze in detail a behavior of the order parameter in the half-filled extended Falicov-Kimball model for small Coulomb interactions (both onsite and intersite ). The par…