Zobrazeno 1 - 10
of 270
pro vyhledávání: '"ROBASZKIEWICZ, S."'
Publikováno v:
Phys. Rev. B 95, 125112 (2017)
We perform a thorough study of an extended Hubbard model featuring local and nearest-neighbor Coulomb repulsion. Using dynamical mean-field theory we investigated the zero temperature phase-diagram of this model as a function of the chemical doping.
Externí odkaz:
http://arxiv.org/abs/1611.03455
Publikováno v:
J. Phys.: Condens. Matter 22 (2010) 255702
The two-component model of high temperature superconductors in its real space version has been solved using Bogoliubov-de Gennes equations. The disorder in the electron and boson subsystem has been taken into account. It strongly modifies the superco
Externí odkaz:
http://arxiv.org/abs/1007.3757
Publikováno v:
Phys. Rev. B 81, 064514 (2010)
We study the influence of diagonal disorder (random site energy) of local pair (LP) site energies on the superconducting properties of a system of coexisting local pairs and itinerant electrons described by the (hard-core) boson-fermion model. Our an
Externí odkaz:
http://arxiv.org/abs/0911.1850
Autor:
Pawlowski, G., Robaszkiewicz, S.
Publikováno v:
Physica A 299, 475 (2001)
We analyse the influence of diagonal disorder (random site energy) on Charge Density Wave (CDW) and Superconductivity (SS) in local pair systems which are described by the model of hard core charged bosons on a lattice. This problem was previously st
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703180
Autor:
Robaszkiewicz, S., Pawlowski, G.
Publikováno v:
Acta Phys. Pol. 90, 569 (1996)
We study two effective models developed for description of superconductors with short-coherence length: (i) the extended Hubbard model with on-site attraction and intersite repulsion, (ii) the model of hard-core charged bosons on a lattice. The analy
Externí odkaz:
http://arxiv.org/abs/cond-mat/0702638
Superconductivity in the two component model of coexisting local electron pairs (hard-core charged bosons) and itinerant fermions coupled via charge exchange mechanism is discussed. The cases of isotropic s-wave and anisotropic pairing of extended s-
Externí odkaz:
http://arxiv.org/abs/cond-mat/0309434
The two component model of coexisting local electron pairs and itinerant fermions coupled via charge exchange mechanism, which mutually induces superconductivity in both subsystems, is discussed. The cases of isotropic s-wave and anisotropic pairing
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212367
The model of local electron pairs and itinerant fermions coupled via charge exchange mechanism, which mutually induces superconductivity in both subsystems is studied for anisotropic pairing symmetry. The phase diagram is presented and the phase fluc
Externí odkaz:
http://arxiv.org/abs/cond-mat/0108305
Publikováno v:
Physica C 272 (1996) 51-61
We study the basic thermodynamic and electromagnetic properties of the superconductor described by the negative-$U$ Hubbard model (gap parameter $\Delta$, critical temperature $T_c$, London penetration depth $\lambda$, thermodynamic critical field $H
Externí odkaz:
http://arxiv.org/abs/cond-mat/9701046
Autor:
CZART, W. R.1 czart@amu.edu.pl, ROBASZKIEWICZ, S.1
Publikováno v:
Acta Physica Polonica: A. 2016, Vol. 130 Issue 2, p613-616. 4p.
