1.3k citations · 3.6k across the 54 of their papers we have counts for
5 papers · 1 filter
Probing the structure and composition of van der Waals heterostructures using the nonlocality of Dirac plasmons in the terahertz regime
I. R. Lavor, L. S. R. Cavalcante, Andrey Chaves +2
Dirac plasmons in graphene are very sensitive to the dielectric properties of the environment. We show that this can be used to probe the structure and composition of van der Waals…
Exciton g-factors of van der Waals heterostructures from first principles calculations
Tomasz Woźniak, Paulo E. Faria Junior, Gotthard Seifert +2
External fields are a powerful tool to probe optical excitations in a material. The linear energy shift of an excitation in a magnetic field is quantified by its effective g-factor…
Plasmons in bias-induced topological phase transition in black phosphorus
D. J. P. de Sousa, L. S. R. Cavalcante, Andrey Chaves +2
We investigate the plasmons in bilayer black phosphorus (BP) with bias-driven formation of Dirac cones, by developing an effective two-band Hamiltonian that captures this electroni…
Quantum Field Theory Approach to the Optical Conductivity of Strained and Deformed Graphene
W. de Paula, a. Chaves, O. Oliveira +1
The computation of the optical conductivity of strained and deformed graphene is discussed within the framework of quantum field theory in curved spaces. The analytical solutions o…
Dynamical gap generation in graphene nanoribbons: An effective relativistic field theoretical model
A. J. Chaves, G. D. Lima, W. de Paula +4
We show that the assumption of a nontrivial zero band gap for a graphene sheet within an effective relativistic field theoretical model description of interacting Dirac electrons o…