Probing topological phase transitions via quantum reflection in the graphene family materials

We theoretically investigate the quantum reflection of different atoms by two-dimensional (2D) materials graphene family (silicene, germanene, and stanene), subjected to an external electric field circularly polarized light. By using Lifshitz theory compute Casimir-Polder potential, which ensures that our predictions apply all regimes atom-2D surface distances, we demonstrate probability exhibits distinctive, unambiguous signatures topological phase transitions occur in 2D materials. also show can be highly tunable these agents, depending on atom-surface combination, reaching a variation 40% for Rubidium presence stanene sheet. Our findings attest not only dispersive forces play crucial role reflection, but comprehensively efficiently probed via interactions at nanoscale.