Here we demonstrate that the 0-dimensional confinement of Ge2Sb2Te5 results in a drastic reduction of the minimum critical fluence required for optical-induced amorphization when compared to the thin-film cases. We show that by using single-shot laser pulses{,} the investigated nanoparticles display a crystalline-to-amorphous transition{,} satisfying a mandatory requirement of a bit-memory element. These unprecedented results open a viable route to boost energy efficient phase-change processes.

Ultralow-fluence single-shot optical crystalline-to-amorphous phase transition in Ge–Sb–Te nanoparticles

Barbara Casarin
;
Antonio Caretta;Fulvio Parmigiani;Marco Malvestuto
2018-01-01

Abstract

Here we demonstrate that the 0-dimensional confinement of Ge2Sb2Te5 results in a drastic reduction of the minimum critical fluence required for optical-induced amorphization when compared to the thin-film cases. We show that by using single-shot laser pulses{,} the investigated nanoparticles display a crystalline-to-amorphous transition{,} satisfying a mandatory requirement of a bit-memory element. These unprecedented results open a viable route to boost energy efficient phase-change processes.
2018
6-ago-2018
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http://dx.doi.org/10.1039/C8NR04350G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2928629
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