Zobrazeno 1 - 10
of 722
pro vyhledávání: '"SPALEK, J"'
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 55 185101 (2022)
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 correlations are taken into account rigorously within the second quantizati
Externí odkaz:
http://arxiv.org/abs/2202.05860
Autor:
Fidrysiak, M., Spałek, J.
Publikováno v:
Phys. Rev. B 104, 020510 (2021)
We provide a unified interpretation of both paramagnon and plasmon modes in high-$T_c$ copper-oxides, and verify it quantitatively against available resonant inelastic $x$-ray scattering (RIXS) data across the hole-doped phase diagram. Three-dimensio
Externí odkaz:
http://arxiv.org/abs/2104.12812
Autor:
Kurleto, R., Fidrysiak, M., Nicolaï, L., Minár, J., Rosmus, M., Walczak, Ł., Tejeda, A., Rault, J. E., Bertran, F., Kądzielawa, A. P., Legut, D., Gnida, D., Kaczorowski, D., Kissner, K., Reinert, F., Spałek, J., Starowicz, P.
Publikováno v:
Phys. Rev. B 104, 125104 (2021)
Hybridization between $f$ electrons and conduction bands ($c$-$f$ hybridization) is a driving force for many unusual phenomena. To provide insight into it, systematic studies of CeCoIn$_5$ heavy fermion superconductor have been performed by angle-res
Externí odkaz:
http://arxiv.org/abs/2101.05761
Publikováno v:
Phys. Rev. B 103, 144511 (2021)
We analyze the two-orbital (with $d_{x^2-y^2}$ and $d_{3z^2-r^2}$ orbitals) analogue of the $t$-$J$-$U$ model as applied to the description of the copper-oxide monolayer deposited on the Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ substrate (CuO$_2$/BSCCO). W
Externí odkaz:
http://arxiv.org/abs/2101.05503
The three-band Emery model is applied to study the selected principal features of the $d$-$wave$ superconducting phase in the copper-based compounds. The electron-electron correlations are taken into account by the use of the diagrammatic expansion o
Externí odkaz:
http://arxiv.org/abs/2009.04922
The three-band \emph{d-p} model is investigated by means of Variational Monte-Carlo (VMC) method with the BCS-like wave-function supplemented by the Gutzwiller and Jastrow correlators. The VMC optimization leads to $d$-$wave$ superconducting state wi
Externí odkaz:
http://arxiv.org/abs/2003.03117
Autor:
Fidrysiak, M., Spałek, J.
Publikováno v:
Phys. Rev. B 102, 014505 (2020)
The generic phase diagram of lightly hole-doped high-$T_c$-cuprates hosts antiferromagnetic insulating phase with well-defined spin-wave excitations. Contrary to the weak-coupling prediction, these modes persist up to the overdoped metallic regime as
Externí odkaz:
http://arxiv.org/abs/1912.06232
The intra-unit-cell nematic phase is studied within the three-band Emery model of the cuprates with the use of the approach based on the diagrammatic expansion of the Gutzwiller wave function (DE-GWF). According to our analysis the spontaneous $C_4$
Externí odkaz:
http://arxiv.org/abs/1909.03701
Publikováno v:
Phys. Rev. B 99, 205106 (2019)
Recently proposed local-correlation-driven pairing mechanism, describing ferromagnetic phases (FM1 and FM2) coexisting with spin-triplet superconductivity (SC) within a single orbitally degenerate Anderson lattice model, is extended to the situation
Externí odkaz:
http://arxiv.org/abs/1902.08444
Publikováno v:
Phys. Rev. B 99, 104511 (2019)
The $d$-$wave$ superconductivity is analyzed within the three-band $d$-$p$ model with the use of the diagrammatic expansion of the Guztwiller wave function method (DE-GWF). The determined stability regime of the superconducting state appears in the r
Externí odkaz:
http://arxiv.org/abs/1812.03677