976 citations
- Centre National de la Recherche ScientifiqueFR49 papers
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59 papers · 1 filter
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…
Nanoscale view of engineered massive Dirac quasiparticles in lithographic superstructures
Alfred J. H. Jones, Lene Gammelgaard, Mikkel O. Sauer +13
Massive Dirac fermions are low-energy electronic excitations characterized by a hyperbolic band dispersion. They play a central role in several emerging physical phenomena such as…
Exciton absorption, band structure, and optical emission in biased bilayer graphene
Mikkel Ohm Sauer, Thomas Garm Pedersen
Biased bilayer graphene (BBG) is a variable band gap semiconductor, with a strongly field-dependent band gap of up to , making it of particular interest for grap…
Dynamic polarizability of low-dimensional excitons
Thomas Garm Pedersen
Excitons in low-dimensional materials behave mathematically as confined hydrogen atoms. An appealing unified description of confinement in quantum wells or wires, etc., is found by…