[HTML][HTML] Superconductivity in high-Tc and related strongly correlated systems from variational perspective: Beyond mean field theory

J Spałek, M Fidrysiak, M Zegrodnik, A Biborski - Physics Reports, 2022 - Elsevier
The principal purpose of this topical review is to single out some of the universal features of
high-temperature (high-T c) and related strongly-correlated systems, which can be …

Antiferromagnetism, charge density wave, and d-wave superconductivity in the extended tJU model: role of intersite Coulomb interaction and a critical overview of …

M Abram, M Zegrodnik, J Spałek - Journal of Physics: Condensed …, 2017 - iopscience.iop.org
In the first part of the paper, we study the stability of antiferromagnetic (AF), charge density
wave (CDW), and superconducting (SC) states within the tJUV model of strongly correlated …

Universal properties of high-temperature superconductors from real-space pairing: model and its quantitative comparison with experiment

J Spałek, M Zegrodnik, J Kaczmarczyk - Physical Review B, 2017 - APS
Selected universal experimental properties of high-temperature superconducting (HTS)
cuprates have been singled out in the last decade. One of the pivotal challenges in this field …

Correlation-driven -wave superconductivity in Anderson lattice model: Two gaps

MM Wysokiński, J Kaczmarczyk, J Spałek - Physical Review B, 2016 - APS
Superconductivity in heavy-fermion systems has an unconventional nature and is
considered to originate from the universal features of the electronic structure. Here, the …

Coexistent spin-triplet superconducting and ferromagnetic phases induced by Hund's rule coupling and electronic correlations: Effect of the applied magnetic field

M Fidrysiak, D Goc-Jagło, E Kądzielawa-Major… - Physical Review B, 2019 - APS
The recently proposed local-correlation-driven pairing mechanism, describing ferromagnetic
phases (FM1 and FM2) coexisting with spin-triplet superconductivity (SC) within a single …

Gutzwiller variational wave function for multiorbital Hubbard models in finite dimensions

K Münster, J Bünemann - Physical Review B, 2016 - APS
We develop a diagrammatic method for the evaluation of general multiband Gutzwiller wave
functions in finite dimensions. Our approach provides a systematic improvement of the …

Coexistence of nematic order and superconductivity in the Hubbard model

J Kaczmarczyk, T Schickling, J Bünemann - Physical Review B, 2016 - APS
We study the interplay of nematic and superconducting order in the two-dimensional
Hubbard model and show that they can coexist, especially when superconductivity is not the …

Many-body breakdown of indirect gap in topological Kondo insulators

MM Wysokiński, M Fabrizio - Physical Review B, 2016 - APS
We show that the inclusion of nonlocal correlation effects in a variational wave function for
the ground state of a topological Anderson lattice Hamiltonian is capable of describing both …

Unconventional superconductivity in generalized Hubbard model: role of electron–hole symmetry breaking terms

MM Wysokiński, J Kaczmarczyk - Journal of Physics: Condensed …, 2017 - iopscience.iop.org
We investigate the effect of the electron–hole (e–h) symmetry breaking on d-wave
superconductivity induced by non-local effects of correlations in the generalized Hubbard …

[HTML][HTML] Spin-triplet pairing in orbitally degenerate Anderson lattice model

P Kubiczek - 2020 - ruj.uj.edu.pl
Niniejsza praca poświęcona jest badaniom nad możliwą teorią uranowych
nadprzewodników ferromagnetycznych, która jest oparta na koncepcji parowania …