5 papers
Ultrafast dynamics of excitons in black phosphorus
Geoffroy Kremer, Juan F. P. Mosquera, Joël Morf +9
Excitons are key quasiparticles determining the optical properties of solids. As such, they can be utilized to coherently control the electronic structure of materials using optica…
Beyond the conventional Emery model: crucial role of long-range hopping for cuprate superconductivity
Eric Jacob, M. O. Malcolms, Viktor Christiansson +6
The Emery model is the quintessential model for cuprate superconductors. In his eponymous paper, Emery only considered the next-nearest-neighbor oxygen-copper hopping. Later, also…
Plasmon assisted superconductivity in LiTiO
Francesco Petocchi, Viktor Christiansson, Ryotaro Arita +1
We combine plus extended dynamical mean field theory (+EDMFT) with the density functional theory for superconductors (SCDFT) framework to study the electronic properties o…
Substrate and cation engineering for optimizing superconductivity in infinite-layer nickelates
Viktor Christiansson, Karsten Held
In a recent experiment [Nature 642, 58 (2025)], a new record for the superconducting critical temperature among infinite-layer nickelates has been reported in doped SmNiO…
Self-consistent +Extended Dynamical Mean Field Theory for semiconductors and insulators
Viktor Christiansson, Francesco Petocchi, Philipp Werner
Theoretical studies of semiconductors and band insulators are usually based on variants of the method without full self-consistency, like single-shot or quasiparticle…