30 citations · 74 across the 10 of their papers we have counts for
10 papers
Electrically Tunable Interband Collective Excitations in Biased Bilayer and Trilayer Graphene
Tomer Eini, M. F. C. Martins Quintela, J. C. G. Henriques +4
Collective excitations of charged particles under the influence of an electromagnetic field give rise to a rich variety of hybrid light-matter quasiparticles with unique properties…
Tunable nonlinear excitonic optical response in biased bilayer graphene
M. F. C. Martins Quintela, N. M. R. Peres, T. Garm Pedersen
Biased bilayer graphene (BBG) is an important system for studies of excitonic effects in graphene--based systems, with its easily tunable bandgap. This bandgap is governed by an ex…
Anisotropic linear and non-linear excitonic optical properties of buckled monolayer semiconductors
M. F. C. Martins Quintela, T. Garm Pedersen
The optical properties of two-dimensional materials are exceptional in several respects. They are highly anisotropic and frequently dominated by excitonic effects. Dipole-allowed s…
Wannier Excitons Confined in Hexagonal Boron Nitride Triangular Quantum Dots
M. F. C. Martins Quintela, N. M. R. Peres
With the ever-growing interest in quantum computing, understanding the behaviour of excitons in monolayer quantum dots has become a topic of great relevance. In this paper, we cons…
Contribution to Excitonic Linewidth from Free Carrier-Exciton Scattering in Layered Materials: The example of h-BN
M. F. C. Martins Quintela, N. M. R. Peres
Scattering of excitons by free carriers is a phenomena which is especially important when considering moderately to heavily doped semiconductors in low temperature experiments, whe…
Excitonic instability in transition metal dichalcogenides
M. F. C. Martins Quintela, A. T. Costa, N. M. R. Peres
When transition-metal dichalcogenide monolayers lack inversion symmetry, their low-energy single particle spectrum can described by tilted massive Dirac Hamiltonians. The so-called…
Theoretical methods for excitonic physics in two-dimensional materials
M. F. C. Martins Quintela, J. C. G. Henriques, N. M. R. Peres
In this tutorial we introduce the reader to several theoretical methods of determining the exciton wave functions and the corresponding eigenenergies. The methods covered are eithe…
Tunable Excitons in Rhombohedral Trilayer Graphene
M. F. C. Martins Quintela, N. M. R. Peres
Trilayer graphene is receiving an increasing level of attention due to its stacking--dependent magnetoelectric and optoelectric properties, and its more robust ferromagnetism relat…
Third-order polarizability of interlayer excitons in hetero-bilayers
M. F. C. Martins Quintela, J. C. G. Henriques, N. M. R. Peres
In this paper, we employ a fully microscopic approach to the study of interlayer excitons in hetero-bilayers. We use Fowler's and Karplus' method to access the dynamical polarizabi…
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…