Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Nuñez, J. J."'
Publikováno v:
Phys. Lett. A 517 (2024), 129656
Strongly correlated electrons systems may exhibit a variety of interesting phenomena, for instance, superconductivity and pseudogap, as is the case of cuprates and pnictides. In strongly correlated electron systems, it is considered essential to unde
Externí odkaz:
http://arxiv.org/abs/2406.13076
Publikováno v:
Physica B: Condensed Matter, 488, 32 (2016)
A good description of the electronic structure of BiS$_{2}$-based superconductors is essential to understand their phase diagram, normal state and superconducting properties. To describe the first reports of normal state electronic structure features
Externí odkaz:
http://arxiv.org/abs/1512.00382
Publikováno v:
Physics Letters A 380, 1648 (2016)
Using a second-order perturbative Green's functions approach we determined the normal state single-particle spectral function $A(\vec{k},\omega)$ employing a minimal effective model for iron-based superconductors. The microscopic model, used before t
Externí odkaz:
http://arxiv.org/abs/1502.08042
We examine the effects of a phenomenological pseudogap on the T=0 K phase diagram of a high temperature superconductor within a self-consistent model which exhibits a d-wave pairing symmetry. At the mean-field level the presence of a pseudogap in the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0504343
We reconsider the Ginzburg-Landau expansion for the case of a non-Fermi liquid superconductor. We obtain analytical results for the Ginzburg-Landau functional in the critical region around the superconducting phase transition, T <= T_c, in two specia
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208176
Re-studying the non-fermi liquid one-particle Green function (NFLGF) we have extended the work of A. Balatsky (Phil. Mag. Lett. 68, 251 (1993)) and L. Yin and S. Chakravarty (Int. J. Mod. Phys. B 10, 805 (1996)), among others. We used the moment appr
Externí odkaz:
http://arxiv.org/abs/cond-mat/9912117
Autor:
Schmidt, A. A., Rodríguez-Núñez, J. J.
We derive the superconductiong mean-field equations for an attractive interaction, V, in the s-wave channel when local Coulomb interactions are taken into account for any value of U. Our results show that the Coulomb repulsion is detrimental to the c
Externí odkaz:
http://arxiv.org/abs/cond-mat/9907448
Autor:
Rodríguez-Núñez, J. J., Schmidt, A. A.
We examine the paper basic equations of T. Doma\'nski and K.I. Wysoki\'nski [Phys. Rev. B {\bf 59}, 173 (1999)], who calculated the critical superconducting temperature, T_c, in function of Coulomb correlations (U) for s- and d-wave order parameter s
Externí odkaz:
http://arxiv.org/abs/cond-mat/9903359
Akademický článek
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Autor:
Schafroth, S., Rodríguez-Núñez, J. J.
We evaluate the one-particle and double-occupied Green functions for the Hubbard model at half-filling using the moment approach of Nolting. Our starting point is a self-energy, $\Sigma(\vec{k},\omega)$, which has a single pole, $\Omega(\vec{k})$, wi
Externí odkaz:
http://arxiv.org/abs/cond-mat/9811356