3 papers
cond-mat.mtrl-sci2026
Energy conservation and pressure relaxation in an extended two-temperature model for copper with an electron temperature-dependent interaction potential
Simon Kümmel, Johannes Roth
An implementation of an electron temperature-dependent interaction potential for copper in a two-temperature model-molecular dynamics framework is presented. An algorithm for enfor…
cond-mat.mtrl-sci2026
Novel non-thermal Ablation Mechanics in the Laser Ablation of Silicon
Dominic Klein, Simon Kümmel, Johannes Roth
We investigate the non-thermal material dynamics of strongly excited silicon during ultra-fast laser ablation. In contrast to metals, silicon shows strongly excitation-dependent in…
cond-mat.mtrl-sci2025
Development and validation of an electron temperature-dependent interaction potential for silicon and copper for the use in atomistic simulations of laser ablation
Simon Kümmel, Johannes Roth
Laser pulses with a duration of the order of femtoseconds lead to a strong excitation, heating and potentially to ablation of the irradiated material. During the time of strong exc…