Selective Nonthermal Melting in Phlogopite under Ultrafast Energy Deposition.

ABSTRACT: Phlogopite is a complex magnesium-rich mineral from the dark mica group, KMg₃(AlSi₃O₁₀)-(OH)₂. Its response to ultrafast excitation of its electronic system is studied using a hybrid model that combines tight-binding molecular dynamics with transport Monte Carlo and the Boltzmann equation. Simulations predict that at the deposited dose of ∼0.17 eV/atom (electronic temperature T _e ∼ 11,000 K), the first hydrogens start to migrate in the otherwise preserved lattice, transiently turning mica into a superionic state. At the dose of ∼0.4 eV/atom (T _e ∼ 13,000 K), Mg atoms start to diffuse like a liquid within stable sublattices of other elements, suggesting a superionic-superionic phase transition. At a dose of appr

SUBMITTER: Medvedev N 

PROVIDER: S-EPMC12641468 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature