Dynamics of Ultrafast Phase Transitions in (001) Si on the Shock-Wave Front

Evgenii Igorevich Mareev
Fedor Viktorovich Potemkin

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Publication date

February 2022

DOI

10.3390/ijms23042115

Publisher

MDPI AG

Journal

International Journal of Molecular Sciences

Abstract

We demonstrate an ultrafast (<0.1 ps) reversible phase transition in silicon (Si) under ultrafast pressure loading using molecular dynamics. Si changes its structure from cubic diamond to β-Sn on the shock-wave front. The phase transition occurs when the shock-wave pressure exceeds 11 GPa. Atomic volume, centrosymmetry, and the X-ray-diffraction spectrum were revealed as effective indicators of phase-transition dynamics. The latter, being registered in actual experimental conditions, constitutes a breakthrough in the path towards simple X-ray optical cross-correlation and pump-probe experiments

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Dynamics of Ultrafast Phase Transitions in (001) Si on the Shock-Wave Front

Abstract

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Dynamics of Ultrafast Phase Transitions in (001) Si on the Shock-Wave Front

Abstract

Extracted data

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