New Physics in Driven Quantum Materials
Speaker: Andrea Cavalleri (Max Planck Institute for the Structure and Dynamics of Matter, Hamburg GERMANY, and Department of Physics, University of Oxford)
Tuesday Apr 12, 2022, 4:00 PM → 6:00 PM Europe/Rome
Aula Conversi (Dip. di Fisica - Edificio G. Marconi)
I will discuss how intense and coherent electromagnetic radiation at Tera-Hertz and mid-infrared frequencies can be used to drive complex solids. Collective excitations are driven nonlinearly, leading to coupling amongst otherwise virtually non-interacting normal modes of the material. Driving gives rise to non-thermal states with unconventional properties, and sometimes with emergent order. Interesting examples involve the nonlinear control of the crystal lattice, used to induce magnetic order, ferroelectricity and non-equilibrium superconductivity at high temperatures.