110 citations · 244 across the 4 of their papers we have counts for
9 papers
Two-dimensional Materials with Giant Optical Nonlinearities Near the Theoretical Upper Limit
Alireza Taghizadeh, Kristian S. Thygesen, Thomas G. Pedersen
Nonlinear optical (NLO) phenomena such as harmonic generation, Kerr, and Pockels effects are of great technological importance for lasers, frequency converters, modulators, switche…
A library of ab initio Raman spectra for automated identification of 2D materials
A. Taghizadeh, U. Leffers, T. G. Pedersen +1
Raman spectroscopy is frequently used to identify composition, structure and layer thickness of 2D materials. Here, we describe an efficient first-principles workflow for calculati…
Plasmons in ultra-thin gold slabs with quantum spill-out: Fourier modal method, perturbative approach, and analytical model
Alireza Taghizadeh, Thomas G. Pedersen
We numerically study the effect of the quantum spill-out (QSO) on the plasmon mode indices of an ultra-thin metallic slab, using the Fourier modal method (FMM). To improve the conv…
Nonlinear optical selection rules of excitons in monolayer transition metal dichalcogenides
Alireza Taghizadeh, T. G. Pedersen
We propose an analytical approach for calculating the linear and nonlinear optical (NLO) responses of monolayer transition metal dichalcogenides (TMDs) including excitonic effects.…
Nonlinear excitonic spin Hall effect in monolayer transition metal dichalcogenides
Alireza Taghizadeh, T. G. Pedersen
We propose and analyze a mechanism for inducing spin Hall currents in ordinary (1H phase) monolayer transition metal dichalcogenides (TMDs) due to the nonlinear process of optical…
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…