98 citations · 292 across the 23 of their papers we have counts for
24 papers
Correlation-assisted topological and metamagnetic transitions in Rashba-coupled superconductors: -- model study
Tushar Dey, Maciej Fidrysiak, Józef Spałek
Unconventional superconductivity commonly emerges in systems characterized by strong electronic correlations, with layered copper-oxides serving as a canonical example. Observation…
Fermiology, charge transfer energy, and robust paramagnons in high- cuprate superconductors
Maciej Fidrysiak
Copper-oxide high-temperature (high-) superconductors host robust paramagnon excitations whose propagation energies are insensitive to hole concentration and correlate with ma…
Spin excitations in Nd1-xSrxNiO2 and YBa2Cu3O7-delta: the influence of Hubbard U
Francesco Rosa, Leonardo Martinelli, Guillaume Krieger +10
We use Resonant Inelastic X-ray Scattering (RIXS) to compare the doping dependence of magnetic excitations of an Infinite-Layer nickelate to those of a prototypical superconducting…
Tuning topological superconductivity within the -- model of twisted bilayer cuprates
Maciej Fidrysiak, Bartłomiej Rzeszotarski, Józef Spałek
We carry out a theoretical study of unconventional superconductivity in twisted bilayer cuprates (TBC) as a function of electron density and layer twist angle. The bilayer --…
High Temperature Superconductivity with Strong Correlations and Disorder: Possible Relevance to Cu-doped Apatite
Maciej Fidrysiak, Andrzej P. Kądzielawa, Józef Spałek
We examine the properties of topological strongly correlated superconductor with bond disorder on triangular lattice and demonstrate that our theoretical (--) model exhibi…
Strain-induced Aharonov-Bohm effect at nanoscale and ground state of a carbon nanotube with zigzag edges
Adam Rycerz, Maciej Fidrysiak, Danuta Goc-Jagło
Magnetic flux piercing a carbon nanotube induce periodic gap oscillations which represent the Aharonov-Bohm effect at nanoscale. Here we point out, by analyzing numerically the ani…
Interparticle correlations and chemical bonding from physical side: Covalency atomicity and ionicity
Ewa Brocławik, Maciej Fidrysiak, Maciej Hendzel +1
In this Chapter we reexamine the concept of and on example of the simplest molecules. First, starting from the exact expression for the two…
Mott transition in the Hubbard model on anisotropic honeycomb lattice with implications for strained graphene: Gutzwiller variational study
Grzegorz Rut, Maciej Fidrysiak, Danuta Goc-Jagło +1
Modification of interatomic distances due to high pressure leads to exotic phenomena, including metallicity, superconductivity and magnetism, observed in materials not showing such…
Electron-hole asymmetry of quantum collective excitations in high- copper oxides
Maciej Fidrysiak
We carry out a systematic study of collective spin- and charge excitations for the canonical single-band Hubbard, --, and - models of high-temperature copper-oxide s…
Towards Complementary Characterization of the Chemical Bond
Maciej Hendzel, Maciej Fidrysiak, Józef Spałek
A precise discussion of a single bond requires consideration of two-particle wave function for the particles involved. Here we define and determine rigorously the intrinsic covalen…
Superconductivity in high- and related strongly correlated systems from variational perspective: Beyond mean field theory
Józef Spałek, Maciej Fidrysiak, Michał Zegrodnik +1
In this review, we single out selected universal features of high- and related systems, which can be compared with experiment. We start with the concept of real-space pairing,…
Many-particle covalency, ionicity, and atomicity revisited for a few simple example molecules
M. Hendzel, M. Fidrysiak, J. Spałek
We analyze two-particle binding factors of H2, LiH, and HeH+ molecules/ions with the help of our original exact diagonalization ab intio (EDABI) approach. The interelectronic corre…
Collective spin and charge excitations in the -- model of high- cuprates
Maciej Fidrysiak, Danuta Goc-Jagło, Józef Spałek
The -- model of high- copper-oxide superconductors incorporates both the on-site Coulomb repulsion and kinetic exchange interaction and yields a semi-quantitative des…
A unified theory of spin and charge excitations in high- cuprates: Quantitative comparison with experiment and interpretation
M. Fidrysiak, J. Spałek
We provide a unified interpretation of both paramagnon and plasmon modes in high- copper-oxides, and verify it quantitatively against available resonant inelastic -ray scat…
Photoemission signature of momentum-dependent hybridization in CeCoIn
R. Kurleto, M. Fidrysiak, L. Nicolaï +14
Hybridization between electrons and conduction bands (- hybridization) is a driving force for many unusual phenomena. To provide insight into it, systematic studies of Ce…
Universal collective modes from strong electronic correlations: Modified theory with application to high- cuprates
Maciej Fidrysiak, Józef Spałek
A nonzero-temperature technique for strongly correlated electron lattice systems, combining elements of both variational wave function (VWF) approach and expansion in the inverse n…
Superconductivity in the three-band model of cuprates: nodal direction characteristics and influence of intersite interactions
M Zegrodnik, A Biborski, M. Fidrysiak +1
The three-band Emery model is applied to study the selected principal features of the - superconducting phase in the copper-based compounds. The electron-electron correlat…
Robust spin and charge excitations throughout high--cuprate phase diagram from incipient Mottness
M. Fidrysiak, J. Spałek
The generic phase diagram of lightly hole-doped high--cuprates hosts antiferromagnetic insulating phase with well-defined spin-wave excitations. Contrary to the weak-coupling…
Coexistent spin-triplet superconducting and ferromagnetic phases induced by the Hund's rule coupling and electronic correlations II: Effect of applied magnetic field
M. Fidrysiak, D. Goc-Jagło, E. Kądzielawa-Major +2
Recently proposed local-correlation-driven pairing mechanism, describing ferromagnetic phases (FM1 and FM2) coexisting with spin-triplet superconductivity (SC) within a single orbi…
Superconductivity in the three-band model of cuprates: Variational wave function study and relation to the single-band case
M. Zegrodnik, A. Biborski, M. Fidrysiak +1
The - superconductivity is analyzed within the three-band - model with the use of the diagrammatic expansion of the Guztwiller wave function method (DE-GWF). The det…
Realistic estimates of superconducting properties for the cuprates: reciprocal-space diagrammatic expansion combined with variational approach
M. Fidrysiak, M. Zegrodnik, J. Spałek
We propose a systematic approach to the systems of correlated electrons, the so-called -DE-GWF method, based on reciprocal-space (-resolved) diagrammatic ex…
Unconventional topological superconductivity and phase diagram for an effective two-orbital model as applied to twisted bilayer graphene
Maciej Fidrysiak, Michał Zegrodnik, Józef Spałek
We consider the superconducting and Mott-insulating states for the twisted bilayer graphene, modeled as two narrow-band system of electrons with appreciable intraatomic Coulomb int…
Spin-triplet paired phases inside ferromagnet induced by Hund's rule coupling and electronic correlations: Application to
E. Kądzielawa-Major, M. Fidrysiak, P. Kubiczek +1
We discuss a mechanism of real-space spin-triplet pairing, alternative to that due to quantum paramagnon excitations, and demonstrate its applicability to . Both th…
Stable high-temperature paramagnons in a three-dimensional antiferromagnet near quantum criticality: Application to TlCuCl
M. Fidrysiak, J. Spałek
The complete set of hallmarks of the three-dimensional antiferromagnet near the quantum critical point has been recently observed in the spin dimer compound TlCuCl. Nonetheless…