1.2k citations · 3.2k across the 26 of their papers we have counts for
26 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…
A Polynomial Approach to the Spectrum of Dirac-Weyl Polygonal Billiards
M. F. C. Martins Quintela, J. M. B. Lopes dos Santos
The Schrödinger equation in a square or rectangle with hard walls is solved in every introductory quantum mechanics course. Solutions for other polygonal enclosures only exist in a…
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…
Nonlinear optical responses of crystalline systems: Results from a velocity gauge analysis
D. J. Passos, G. B. Ventura, J. M. Viana Parente Lopes +2
In this work, the difficulties inherent to perturbative calculations in the velocity gauge are addressed. In particular, it is shown how calculations of nonlinear optical responses…