5 papers
Nonlinear optical conductivity of a two-band crystal I
D. J. Passos, G. B. Ventura, J. M. B. Lopes dos Santos +1
The structure of the electronic nonlinear optical conductivity is elucidated in a detailed study of the time-reversal symmetric two-band model. The nonlinear conductivity is decomp…
Landauer transport as a quasisteady state on finite chains under unitary quantum dynamics
J. P. Santos Pires, B. Amorim, J. M. Viana Parente Lopes
In this paper, we study the emergence of a Landauer transport regime from the quantum-mechanical dynamics of free electrons in a disordered tight-binding chain, which is coupled to…
Global Delocalization Transition in the de Moura-Lyra Model
J. P. Santos Pires, N. A. Khan, J. M. Viana Parente Lopes +1
The possibility of having a delocalization transition in the 1D de Moura-Lyra class of models (having a power-spectrum has been the object of a long standing disc…
A study of the nonlinear optical response of the plain graphene and gapped graphene monolayers beyond the Dirac approximation
G. B. Ventura, D. J. Passos, J. M. Viana Parente Lopes +1
In this work, we present numerical results for the second and third order conductivities of the plain graphene and gapped graphene monolayers associated with the second and third h…
Spectral Functions of One-Dimensional Systems with Correlated Disorder
N. A. Khan, J. M. Viana Parente Lopes, J. P. Santos Pires +1
We investigate the spectral function of Bloch states in an one-dimensional tight-binding non-interacting chain with two different models of static correlated disorder, at zero temp…