79 citations · 96 across the 7 of their papers we have counts for
7 papers
Electronic and optical properties of native point defects in CuInS and CuGaS
Henry Phillip Fried, Daniel Barragan-Yani, Ludger Wirtz
We present a detailed study of common intrinsic defects in CuInS and CuGaS using the Heyd, Scuseria and Ernzerhof (HSE) hybrid functional scheme. The impact of the two HSE…
Symmetries of excitons
Muralidhar Nalabothula, Davide Sangalli, Fulvio Paleari +2
Excitons, bound electron-hole pairs, are responsible for strong optical resonances near the bandgap in low-dimensional materials and wide-bandgap insulators. Although current ab in…
Enhancement of the WS A Raman Mode in MoS/WS Heterostructures
Annika Bergmann-Iwe, Tomasz Woźniak, Mustafa Hemaid +9
When combined into van der Waals heterostructures, transition metal dichalcogenide monolayers enable the exploration of novel physics beyond their unique individual properties. How…
Origin of interlayer exciton-phonon coupling in 2D heterostructures
Muralidhar Nalabothula, Ludger Wirtz, Sven Reichardt
The coupling between excitons and phonons across adjacent layers has been experimentally observed in various heterostructures of layered materials. Yet the precise mechanism underl…
Intervalence Plasmons in Boron-Doped Diamond
Souvik Bhattacharya, Jonathan Boyd, Sven Reichardt +8
Doped semiconductors can exhibit metallic-like properties ranging from superconductivity to tunable localized surface plasmon resonances. Diamond is a wide-bandgap semiconductor th…
Symmetry-dependent dielectric screening of optical phonons in monolayer graphene
Loïc Moczko, Sven Reichardt, Aditya Singh +13
Quantised lattice vibrations (i.e., phonons) in solids are robust and unambiguous fingerprints of crystal structures and of their symmetry properties. In metals and semimetals, str…
Dielectric screening of the Kohn anomaly of graphene on hexagonal boron nitride
F. Forster, A. Molina-Sanchez, S. Engels +5
Kohn anomalies in three-dimensional metallic crystals are dips in the phonon dispersion that are caused by abrupt changes in the screening of the ion-cores by the surrounding elect…