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Quantum spill-out in nanometer-thin gold slabs: Effect on plasmon mode index and plasmonic absorption
Enok J. H. Skjølstrup, Thomas Søndergaard, Thomas G. Pedersen
A quantum mechanical approach and local response theory are applied to study plasmons propagating in nanometer-thin gold slabs sandwiched between different dielectrics. The metal s…
Dissociation of two-dimensional excitons in monolayer WSe2
Mathieu Massicotte, Fabien Vialla, Peter Schmidt +11
Two-dimensional (2D) semiconducting materials are promising building blocks for optoelectronic applications, many of which require efficient dissociation of excitons into free elec…
Gauge invariance of excitonic linear and nonlinear optical response
Alireza Taghizadeh, T. G. Pedersen
We study the equivalence of four different approaches to calculate the excitonic linear and nonlinear optical response of multiband semiconductors. These four methods derive from t…
Fast Summation of Divergent Series and Resurgent Transseries in Quantum Field Theories from Meijer-G Approximants
Hector Mera, Thomas G. Pedersen, Branislav K. Nikolic
We demonstrate that a Meijer-G-function-based resummation approach can be successfully applied to approximate the Borel sum of divergent series, and thus to approximate the Borel-É…
Nonlinear optical response of doped mono- and bilayer graphene: length gauge tight-binding model
F. Hipolito, Alireza Taghizadeh, T. G. Pedersen
We compute the nonlinear optical response of doped mono- and bilayer graphene using the full dispersion based on tight-binding models. The response is derived with the density matr…