30 citations · 147 across the 11 of their papers we have counts for
11 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…
Anatomy of linear and non-linear intermolecular exchange in S = 1 nanographenes
J. C. G. Henriques, J. Fernández-Rossier
Nanographene triangulenes with a S = 1 ground state have been used as building blocks of antiferromagnetic Haldane spin chains realizing a symmetry protected topological phase. By…
Broken-symmetry magnetic phases in two-dimensional triangulene crystals
G. Catarina, J. C. G. Henriques, A. Molina-Sánchez +2
We provide a comprehensive theory of magnetic phases in two-dimensional triangulene crystals, using both Hubbard model and density functional theory (DFT) calculations. We consider…
Laser induced enhanced coupling between photons and squeezed magnons in antiferromagnets
J. C. G. Henriques, T. V. C. Antão, N. M. R. Peres
In this paper we consider a honeycomb antiferromagnet subject to an external laser field. Obtaining a time-independent effective Hamiltonian, we find that the external laser renorm…
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…
Two limit cases of twisted hBN bilayers and their excitonic response
J. C. G. Henriques, B. Amorim, R. M. Ribeiro +1
In this paper we discuss the optical response due to the excitonic effect of two types of hBN bilayers: AB and AA'. Understanding the properties of these bilayers is of great utili…
Absorption and optical selection rules of tunable excitons in biased bilayer graphene
J. C. G. Henriques, Itai Epstein, N. M. R. Peres
Biased bilayer graphene, with its easily tunable band gap, presents itself as the ideal system to explore the excitonic effect in graphene based systems. In this paper we study the…
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…
Microscopic theory of the polarizability of transition metal dichalcogenides excitons: Application to WSe2
J. C. G. Henriques, M. F. C. Martins Quintela, N. M. R. Peres
In this paper we develop a fully microscopic theory of the polarizability of excitons in transition metal dichalcogenides. We apply our method to the description of the excitation…
Analytical Quantitative Semi-Classical Approach to the LoSurdo-Stark Effect and Ionization in 2D excitons
J. C. G. Henriques, Hogni C. Kamban, Thomas G. Pedersen +1
Using a semi-classical approach, we derive a fully analytical expression for the ionization rate of excitons in two-dimensional materials due to an external static electric field,…
Excitons in Phosphorene: A Semi-Analytical Perturbative Approach
J. C. G. Henriques, N. M. R. Peres
In this paper we develop a semi-analytical perturbation-theory approach to the calculation of the energy levels (binding energies) and wave functions of excitons in phosphorene. Ou…