Electronic stopping processes of ion projectiles: A tight-binding Floquet scattering formalism

Ions shooting through solids are slowed down by electronic excitation in the so-called electronic stopping process. This century-old, far from equilibrium problem is of fundamental and applied interest in various contexts, including nuclear, space and biomedical industries. The electronic stopping problem is approached theoretically from two prevalent paradigms, one based on linear response for weak effective interactions, the other on the homogeneous electron liquid, a successful model for simple metals. A more general theory for crystalline solids has recently been introduced, which exploits the Floquet theory for modelling electronic stopping [1]. Here we utilise this general theory to present a solution for the unconventional scattering problem that arises from the electronic stopping process using a tight-binding approach.
[1] Forcellini, N. and Artacho, E.,arXiv:1908.09783 (2019)