541 citations · 1.1k across the 19 of their papers we have counts for
27 papers · 1 filter
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…
Calculation of the nonlinear response functions of intra-exciton transitions in two-dimensional transition metal dichalcogenides
J. C. G. Henriques, Høgni C. Kamban, Thomas G. Pedersen +1
In this paper, we study the third-order nonlinear optical response due to transitions between excitonic levels in two-dimensional transition metal dichalcogeniedes. To accomplish t…
Anisotropic Stark shift, field-induced dissociation, and electroabsorption of excitons in phosphorene
Høgni C. Kamban, Thomas G. Pedersen, Nuno M. R. Peres
We compute binding energies, Stark shifts, electric-field-induced dissociation rates, and the Franz-Keldysh effect for excitons in phosphorene in various dielectric surroundings. A…