46 citations · 110 across the 17 of their papers we have counts for
6 papers · 1 filter
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…
Competing effective interactions of Dirac electrons in the Spin-Fermion system
E. C. Marino, Lizardo H. C. M. Nunes
Recently discovered advanced materials, such as heavy fermions, frequently exhibit a rich phase diagram suggesting the presence of different competing interactions. A unified descr…
The competition between the superconducting and the excitonic phases on doped Dirac electronic systems
Lizardo H. C. M. Nunes, R. L. S. Farias, E. C. Marino
We investigate the competition between the superconducting and the excitonic phases on Dirac electrons on a bipartite planar lattice. The conditions for the appearance of supercond…
Competing superconducting, magnetic and charge orderings in the AF Heisenberg-Kondo lattice with Dirac electrons
E. C. Marino, Lizardo H. C. M. Nunes
Many recently discovered advanced materials, such as high-Tc cuprates, iron pnictides and several heavy-fermions, exhibit a rich phase diagram suggesting the presence of different…
Magnetic and Quasiparticle Excitation Spectra of an Itinerant Model for Iron Pnictide Superconductors
C. M. S. da Conceicao, M. B. Silva Neto, E. C. Marino
We calculate the magnetic and quasiparticle excitation spectra of an itinerant model for iron pnictides. In addition to an acoustic spin-wave branch, the magnetic spectru…
Phase Structure and Universality in Two-Dimensional Disordered Quantum Antiferromagnets
E. C. Marino
Two-dimensional disordered quantum antiferromagnets are studied by means of a continuum description in which disorder is introduced by a random distribution of couplings (spin stif…