Dipolar excitons of GaAs coupled quantum wells provide a model system to study collective phenomena that can emerge in two-dimensional semiconductors. Indeed, these are characterised by a large electric dipole moment and a...
In a metal, the direct repulsive interaction between two electrons (Coulombic interaction) is shielded by the presence of many other electrons. When the density of electrons decreases, this repulsive interaction between electrons increases. If...
Since their first synthesis in 2015 by Kovalenko’s group at ETH Zürich, the all-inorganic lead halide perovskite nanocrystals CsPbX3 (X = Br, Cl, I) have attracted great attention due to their outstanding electronic...
Currently used in self-cleaning windows and dye-sensitized solar cells, titanium dioxide TiO2 is a promising material for the photochemical purification of air and water or for hydrogen production via water splitting. Its particular photocatalytic...
Highlights / Magnetism and Physics of spin / Transversal Topics
by Cécile Duflot · Published 28 February 2018 · Last modified 23 July 2021
n a ferromagnetic material, an excitation can produce a precessional movement of magnetic moments at frequencies in the range of 1 GHz or higher. This excitation can be triggered by light (Brillouin scattering), microwaves...
