6 papers
Second harmonic generation in germanium quantum wells for nonlinear silicon photonics
Jacopo Frigerio, Chiara Ciano, Joel Kuttruff +12
Second-harmonic generation (SHG) is a direct measure of the strength of second-order nonlinear optical effects, which also include frequency mixing and parametric oscillations. Nat…
Transition metal dichalcogenide metamaterials with atomic precision
Battulga Munkhbat, Andrew B. Yankovich, Ruggero Verre +2
The ability to extract materials just a few atoms thick has led to discovery of graphene, monolayer transition metal dichalcogenides (TMDs), and other important two-dimensional mat…
Experimentally Calibrated Kinetic Monte Carlo Model Reproduces Organic Solar Cell Current-Voltage Curve
Sebastian Wilken, Tanvi Upreti, Armantas Melianas +5
Kinetic Monte Carlo (KMC) simulations are a powerful tool to study the dynamics of charge carriers in organic photovoltaics. However, the key characteristic of any photovoltaic dev…
Visualizing plasmon-exciton polaritons at the nanoscale using electron microscopy
Andrew B. Yankovich, Battulga Munkhbat, Denis G. Baranov +7
Polaritons are compositional light-matter quasiparticles that have recently enabled remarkable breakthroughs in quantum and nonlinear optics, as well as in material science. Despit…
Electric field-controlled reversible order-disorder switching of a metal tip surface
Ludvig de Knoop, Mikael Juhani Kuisma, Joakim Löfgren +5
While it is well established that elevated temperatures can induce surface roughening of metal surfaces, the effect of a high electric field on the atomic structure at ambient temp…
Induced unconventional superconductivity on the surface states of BiTe topological insulator
Sophie Charpentier, Luca Galletti, Gunta Kunakova +11
Topological superconductivity is central to a variety of novel phenomena involving the interplay between topologically ordered phases and broken-symmetry states. The key ingredient…