Sjoelen met elektronen

Oratie uitgesproken door Prof.dr.ir. Sense Jan van der Molen bij de aanvaarding van het ambt van HoogleraarFysica van de gecondenseerde materie aan de Universiteit Leiden op vrijdag 21 oktober 2022.Oratie uitgesproken door Prof.dr.ir. Sense Jan van der Molen bij de aanvaarding van het ambt van Hoogleraar Fysica van de gecondenseerde materie aan de Universiteit Leiden op vrijdag 21 oktober 2022.Quantum Matter and Optic

Correlated electromigration of H in the switchable mirror YH3-delta

The optical method of Den Broeder et al. was extended to study migration of hydrogen vacancies in Y

Gender effects in Dutch research funding: a statistical investigation of the Research Talent Programme 2012-2021

Quantum Matter and Optic

Formation of a mixed ordered termination on the surface of LaAlO3(001)

Quantum Matter and Optic

Intrinsic Instability of Aberration-Corrected Electron Microscopes

163901Quantum Matter and Optic

Charge catastrophe and dielectric breakdown during exposure of organic thin films to low-energy electron radiation

Quantum Matter and Optic

Low-energy electron irradiation damage in few-monolayer pentacene films

Quantum Matter and Optic

Insulating fcc YH3-ô stabilized by MgH2

We study the structural, optical, and electrical properties of MgzY1-z switchable mirrors upon hydrogenation. It is found that the alloys disproportionate into essentially pure YH3-δ and MgH2 with the crystal structure of YH3-δ dependent on the Mg concentration z. For 0~0.1 only cubic YH3-δ is present. Interestingly, cubic YH3-δ is expanded compared to YH2, in disagreement with theoretical predictions. From optical and electrical measurements we conclude that cubic YH3-δ is a transparent insulator with properties similar to hexagonal YH3-δ. Our results are inconsistent with calculations predicting fcc YH3-δ to be metallic, but they are in good agreement with recent GW calculations on both hcp and fcc YH3. Finally, we find an increase in the effective band gap of the hydrided MgzY1-z alloys with increasing z. Possibly this is due to quantum confinement effects in the small YH3 clusters

Interface shape dependent interference patterns of NbSe2 heterostructure Josephson junctions

Quantum Matter and Optic