98 citations · 1.2k across the 86 of their papers we have counts for
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Superconductivity in an almost localized Fermi liquid of quasiparticles with spin-dependent masses and effective field induced by electron correlations
Jan Kaczmarczyk, Jozef Spalek
Paired state of nonstandard quasiparticles is analyzed in detail in two model situations. Namely, we consider the Cooper-pair bound state and the condensed phase of an almost local…
Superconducting BCS versus Fulde-Ferrell-Larkin-Ovchinnikov states of quasiparticles with spin dependent mass and their distinguishability
J. Spalek, M. Maska, M. Mierzejewski +1
The first observation of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconducting state and a subsequent detection of the spin-dependent effective masses of quasiparticles in th…
Superconducting state of quasiparticles with spin dependent mass and their distinguishability for Cooper-pair state
J. Spalek, M. M. Maska, M. Mierzejewski +1
Spin dependence of quasiparticle mass has been observed recently in CeCoIn5 and other systems. It emerges from strong electronic correlations in a magnetically polarized state and…
Extended Hubbard model with renormalized Wannier wave functions in the correlated state: beyond the parametrized models
Jan Kurzyk, Włodzimierz Wójcik, Jozef Spałek
The method used earlier for analysis of correlated nanoscopic systems is extended to infinite (periodic) s-band like systems described by the Hubbard model and its extensions. The…
Effective t-J model of pairing: singlet versus triplet
Jozef Spałek
The t-J model is regarded as a canonical model of spin-singlet pairing induced by the {\em kinetic exchange interaction} responsible also for an antiferromagnetic ordering in the s…
Construction of density operator for a general mean-field Hamiltonian and its application to the models of correlated fermions
Jakub Jȩdrak, Jozef Spałek
We analyze a class of mean-field (MF) lattice-fermion Hamiltonians and construct the corresponding grand-canonical density operator for such system. New terms are introduced, which…