The collective mode in the infrared optical response of VSe2
The layered transition-metal dichalcogenide, VSe2 undergoes a phase transition from a good metal to a charge density wave phase. Recent advances in crystal growth enable a detailed study of the imprint of the charge density wave on the optical conductivity.
News & Views (Erik van Heumen)
In a Nature Materials News & Views article, Erik van Heumen describes recent experiments where the interactions between exotic quasi-particles can be tuned.
From quantum gravity to strange metals
What does a quantum theory of gravity have in common with electrons in a ’strange’ metal? At first sight: not much, but this week in Nature a Dutch NWO consortium, including researchers Jake Ayres, Maarten Berben and Nigel Hussey (Radboud University), Jan Zaanen (Leiden University) and Erik van Heumen (University of Amsterdam) reports on new experimental findings that may point towards such a link after all.
Magnetic field-boosted superconductivity
Featured review in Physics Today by Anne de Visser.
DFT study: Band structure engineering of Si nanocrystals towards more efficient emission
Our new publication in Chemistry of Materials on "how to enhance radiative rate in silicon nanomaterials" and how to further improve DFT simulations of indirect band-gap nanomaterials
Exciton resonance tuning of an atomically thin lens
Exciton resonances in monolayer 2D semiconductor can be used to realise large-area atomically-thin lenses with a tuneable intensity in the focus.
Near-field imaging of metal insulator transitions
Scattering type scanning near-field optical spectroscopy enables us to image local variations in the optical properties of materials with nanometer scale resolution.