81 citations · 158 across the 6 of their papers we have counts for
6 papers
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…
Efficient ionization of two dimensional excitons by intense single cycle terahertz pulses
Høgni C. Kamban, Thomas G. Pedersen
External electric fields are highly attractive for dynamical manipulation of excitons in two-dimensional materials. Here, we theoretically study the ionization of excitons in monol…
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…
Interlayer excitons in van der Waals heterostructures: Binding energy, Stark shift, and field-induced dissociation
Høgni C. Kamban, Thomas G. Pedersen
Photoexcited intralayer excitons in van der Waals heterostructures (vdWHs) with type-II band alignment have been observed to tunnel into interlayer excitons on ultrafast timescales…
Finite-difference time-domain simulation of strong-field ionization: Perfectly matched layer approach
Høgni C. Kamban, Sigurd S. Christensen, Thomas Søndergaard +1
A Finite-Difference Time-Domain (FDTD) scheme with Perfectly Matched Layers (PMLs) is considered for solving the time-dependent Schrödinger equation, and simulate the ionization of…
Field-induced dissociation of two-dimensional excitons in transition-metal dichalcogenides
Høgni C. Kamban, Thomas G. Pedersen
Generation of photocurrents in semiconducting materials requires dissociation of excitons into free charge carriers. While thermal agitation is sufficient to induce dissociation in…