Unravelling the coexistence of insulating and metallic-like excitations in SrIrO₃
Fig. 1: RIXS investigation of iridate/titanate heterostructures. (a) Representation of (SrIrO3)m(SrTiO3)1 superlattices grown on a (001)-oriented SrTiO3 single-crystal substrate. (b) Phase diagram of the (SrIrO3)m(SrTiO3)1 system, showing the bandwidth-controlled metal-insulator transition that occurs as the confinement increases from m = 3 to m = 2. (c) Intensity map of Ir L3-edge RIXS spectra for the m = 4 sample at T = 20 K, plotted as a function of energy transfer and momentum transfer Q. Two distinct excitations are observed: a low-energy paramagnon and an SOE at intermediate energies.
Measuring How Molecules Communicate
A collaboration between PSI and the University of Vienna has resulted in a new experimental method that, for the first time, enables the direct measurement of partial charges in molecules. Partial charges are fundamental to understanding molecular structure, interactions, and reactivity, yet until now no general technique existed to determine them experimentally.
Un cœur volumineux et des sens aiguisés: les clés du foisonnement explosif des premiers poissons
La reconstruction par rayons X d’un fossile vieux de 400 millions d’années illumine un moment clé de notre passé évolutif le plus reculé.