11 citations · 14 across the 4 of their papers we have counts for
4 papers
The cumulant Green's functions method for the single impurity Anderson model
T. M. Sobreira, T. O. Puel, M. A. Manya +5
Using the cumulant Green's functions method (CGFM), we study the single impurity Anderson model (SIAM). The CGFM starting point is a diagonalization of the SIAM Hamiltonian express…
Quantum impurity with 2/3 local moment in 1D quantum wires: an NRG study
P. A. Almeida, M. A. Manya, M. S. Figueira +3
We study a Kondo state that is strongly influenced by its proximity to an w^-1/2 singularity in the metallic host density of states. This singularity occurs at the bottom of the ba…
The cumulant Green's functions method for the Hubbard model
Renan Lira, Peter Riseborough, Jereson Silva-Valencia +1
We study the single-band Hubbard model under the action of an external magnetic field using the cumulant Green's functions method (CGFM). The starting point of the method is to dia…
Braiding of edge states in narrow zigzag graphene nanoribbons: effect of the third neighbors hopping
J. H. Correa, A. Pezo, M. S. Figueira
We study narrow zigzag graphene nanoribbons (ZGNRs), employing density functional theory (DFT) simulations and the tight-binding (TB) method. The main result of these calculations…