11 citations · 30 across the 13 of their papers we have counts for
7 papers · 1 filter
Phase separation near half-filling point in superconducting compounds
K. Kucab, G. Górski, J. Mizia
We present the model of superconducting ceramics using the single band extended Hubbard Hamiltonian. We investigate the simultaneous presence of antiferromagnetism (AF) and d-wave…
Band magnetism with inter-site correlations and interactions
J. Mizia, G. Górski, K. Kucab
We introduce the Hamiltonian to describe narrow band electrons. The physics of driving forces towards ferromagnetism is re-examined. Using different approximations it has been show…
Alternative equation of motion approach to the single-impurity Anderson model
Grzegorz Górski, Jerzy Mizia, Krzysztof Kucab
Solving the single-impurity Anderson model (SIAM) is a basic problem of solid state physics. The SIAM model is very important, at present it is also used for systems with quantum i…
New Green function approach describing the ferromagnetic state in the simple Hubbard model
Grzegorz Górski, Jerzy Mizia, Krzysztof Kucab
We consider a Hubbard model with occupation dependent hopping integrals. Using the Hartree-Fock (H-F) approximation and the new Green function approach with inter-site kinetic aver…
Appearance of Antiferromagnetism and Superconductivity in Superconducting Cuprates
Krzysztof Kucab, Grzegorz Górski, Jerzy Mizia
We represent the superconducting ceramic compounds by the single band extended Hubbard model. We solve this model for the simultaneous presence of antiferromagnetism and the d-wave…
Coexistence of Ferromagnetism with Spin Triplet Superconductivity
Grzegorz Górski, Krzysztof Kucab, Jerzy Mizia
The experimental results for ZrZn, URhGe, and in some pressure ranges also for UGe, have shown that the ferromagnetic superconductors are weak itinerant ferromagnets. G…