54 citations · 219 across the 21 of their papers we have counts for
22 papers
Effects of a Magnetic Field on Superconductivity and Quantum Criticality in Quasi-Two-Dimensional Systems with Dirac Electrons
E. C. Marino, Lizardo H. C. M. Nunes
We study the effects of an external magnetic field on thensuperconducting phase diagram of a quasi-two-dimensional system of Dirac electrons at an arbitrary temperature. At zero te…
From the spin-fermion model to anisotropic superconductivity
Lizardo H. C. M. Nunes, Eduardo C. Marino
We use the spin-fermion model to describe the CuO planes of the high-Tc superconductors. Using a large wavelength approach, we show that the ferromagnetic component of the Cu s…
Nonextensive thermodynamics applied to superconductivity
Lizardo H. C. M. Nunes, E. V. L. de Mello
We have shown that the weak-coupling limit superconductors are well described by , where is a real parameter which characterizes the degree of nonextensivity of T…
Superconductor-insulator transition induced by pressure within the X-boson approach
Lizardo H. C. M. Nunes, M. S. Figueira, E. V. L. de Mello
The pressure induced superconducting phase diagram is calculated for an extension of the periodic Anderson model (PAM) in the limit taking into account the effect of…
Study of the Kondo and high-temperature limits of the slave-boson and X-boson methods
Lizardo H. C. M. Nunes, M. S. Figueira, M. E. Foglio
In this Letter we study the periodic Anderson model, employing both the slave-boson and the X-boson approaches in the mean field approximation. We investigate the breakdown of the…
A quantum critical superconducting phase transition in quasi-two-dimensional systems with Dirac electrons
E. C. Marino, Lizardo H. C. M. Nunes
We present a theory describing the superconducting (SC) interaction of Dirac electrons in a quasi-two-dimensional system consisting of a stack of N planes. The occurrence of a SC p…