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Issue 35, 2018
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Ultralow-fluence single-shot optical crystalline-to-amorphous phase transition in Ge–Sb–Te nanoparticles

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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.

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

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Supplementary files

Article information


Submitted
29 May 2018
Accepted
04 Aug 2018
First published
06 Aug 2018

Nanoscale, 2018,10, 16574-16580
Article type
Paper

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

B. Casarin, A. Caretta, B. Chen, B. J. Kooi, R. Ciprian, F. Parmigiani and M. Malvestuto, Nanoscale, 2018, 10, 16574
DOI: 10.1039/C8NR04350G

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