The scientific issues studied by the LUTECE group are based on crystals displaying singularities of the electronic band and/or atomic instabilities, such as charge density waves, spin density waves or photovoltaic systems. The experimental methods used to probe the organization and the dynamics of such compounds, at equilibrium or out-of-equilibrium, are diffraction (coherent, ultra-fast, scanning diffraction), angle resolved photoemission (direct or inverse) and photoluminescence. The measurements are often performed under various external constraints (applied currents, mechanical strains or ultra-short laser pulses) and performed on synchrotron or Xfel sources and on original inhouse experiments.
- Out of Equilibrium dynamics electronic crystals (ODC,ODS, Sc)
- Optoelectronic properties of hybrid perovskites
- Band structure under negative pressure