Day / Time
Date(s) - 27/05/2014
13 h 00 min - 15 h 00 min
Auditoire Stückelberg, 24 quai Ernest-Ansermet
This seminar will be presented by Prof. Marco Grioni (EPFL) and he will speak aboutTransition metal oxide systems – bulk, surfaces and interfaces – exhibit a dazzling variety of electronic and magnetic properties. This richness and complexity derives in a crucial way from the peculiar nature of the hybrid TM d – O p states, which are shaped by competing electron-electron, electron-phonon and magnetic interactions. Angle-resolved photoemission (ARPES) and resonant inelastic x-ray scattering (RIXS) provide complementary views of the electronic structure of these materials, of their excitations, and of the nature of the leading interactions. In this talk I will present recent ARPES and RIXS results showing the formation and disapperance of polarons in TiO2-anatase, and discuss the hopping of Zhang-Rice singlets between weakly-coupled sublattices in tetragonal CuO, a newly synthesized cuprate material.