Selective nonthermal melting in phlogopite under ultrafast energy deposition

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00642492" target="_blank" >RIV/68378271:_____/25:00642492 - isvavai.cz</a>
Alternative codes found
RIV/61389021:_____/25:00648110
Result on the web
<a href="https://hdl.handle.net/11104/0374442" target="_blank" >https://hdl.handle.net/11104/0374442</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcc.5c06758" target="_blank" >10.1021/acs.jpcc.5c06758</a>

Result language
angličtina
Original language name
Selective nonthermal melting in phlogopite under ultrafast energy deposition
Original language description
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 Te ∼ 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 (Te ∼ 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 approximately 0.5 eV/atom (Te ∼ 14,000 K), the entire atomic lattice destabilizes, disordering on a picosecond time scale. It is accompanied by the formation of defect energy levels inside the bandgap. At the dose of ∼0.9 eV/atom (Te ∼ 16,000 K), the bandgap completely collapses, turning the material metallic (electronically conducting). At even higher doses, nonthermal acceleration of atoms heats the atomic system at ultrafast time scales, K and O elements are most affected, accelerating within a few tens of femtoseconds.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/LM2023068" target="_blank" >LM2023068: Prague Asterix Laser System</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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