[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 …

Rocksalt-type PrO epitaxial thin film as a weak ferromagnetic Kondo lattice

H Shimizu, D Oka, K Kaminaga, D Saito, T Yamamoto… - Physical Review B, 2022 - APS
A unique Kondo lattice praseodymium monoxide PrO was synthesized in the form of an
epitaxial thin film. The rocksalt-type PrO thin films with a 4 f 2 5 d 1 electronic configuration …

High-temperature superconductivity in the two-dimensional t–J model: Gutzwiller wavefunction solution

J Kaczmarczyk, J Bünemann, J Spałek - New Journal of Physics, 2014 - iopscience.iop.org
A systematic diagrammatic expansion for Gutzwiller wavefunctions (DE-GWFs) proposed
very recently is used for the description of the superconducting (SC) ground state in the two …

Ferromagnetism in : A microscopic model

MM Wysokiński, M Abram, J Spałek - Physical Review B, 2014 - APS
The Anderson lattice model is used to explain the principal features of the heavy fermion
compound UGe 2 by means of the generalized Gutzwiller approach (the statistically …

Criticalities in the itinerant ferromagnet

MM Wysokiński, M Abram, J Spałek - Physical Review B, 2015 - APS
We provide a microscopic description of the magnetic properties of UGe 2 and, in particular,
of its both classical and quantum critical behavior. Namely, we account for all the critical …

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 …

Coexistence of spin-triplet superconductivity with magnetism within a single mechanism for orbitally degenerate correlated electrons: statistically consistent Gutzwiller …

M Zegrodnik, J Spałek, J Bünemann - New Journal of Physics, 2013 - iopscience.iop.org
An orbitally degenerate two-band Hubbard model is analyzed with the inclusion of the
Hund's rule-induced spin-triplet even-parity paired states and their coexistence with …

Spin-triplet paired phases inside a ferromagnet induced by Hund's rule coupling and electronic correlations: Application to

E Kądzielawa-Major, M Fidrysiak, P Kubiczek, J Spałek - Physical Review B, 2018 - APS
We discuss a mechanism of real-space spin-triplet pairing, which is an alternative to the one
due to quantum paramagnon excitations, and demonstrate its applicability to UGe 2. Both …

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 wave-function solution for Anderson lattice model: Emerging universal regimes of heavy quasiparticle states

MM Wysokiński, J Kaczmarczyk, J Spałek - Physical Review B, 2015 - APS
The recently proposed diagrammatic expansion (DE) technique for the full Gutzwiller wave
function (GWF) is applied to the Anderson lattice model. This approach allows for a …