Universität zu Köln

Casarin, Barbara, Caretta, Antonio, Chen, Bin, Kooi, Bart J., Ciprian, Roberta ORCID: 0000-0002-2440-024X, Parmigiani, Fulvio ORCID: 0000-0001-9529-7406 and Malvestuto, Marco (2018). Ultralow-fluence single-shot optical crystalline-to-amorphous phase transition in Ge-Sb-Te nanoparticles. Nanoscale, 10 (35). S. 16574 - 16581. CAMBRIDGE: ROYAL SOC CHEMISTRY. ISSN 2040-3372

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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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Casarin, Barbara UNSPECIFIED UNSPECIFIED UNSPECIFIED Caretta, Antonio UNSPECIFIED UNSPECIFIED UNSPECIFIED Chen, Bin UNSPECIFIED UNSPECIFIED UNSPECIFIED Kooi, Bart J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ciprian, Roberta UNSPECIFIED orcid.org/0000-0002-2440-024X UNSPECIFIED Parmigiani, Fulvio UNSPECIFIED orcid.org/0000-0001-9529-7406 UNSPECIFIED Malvestuto, Marco UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-172592
DOI:	10.1039/c8nr04350g
Journal or Publication Title:	Nanoscale
Volume:	10
Number:	35
Page Range:	S. 16574 - 16581
Date:	2018
Publisher:	ROYAL SOC CHEMISTRY
Place of Publication:	CAMBRIDGE
ISSN:	2040-3372
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language STRUCTURAL TRANSITIONS; GE2SB2TE5; MEMORY; FILMS; NONVOLATILE; DISORDER; NANOWIRE; MEDIA Multiple languages Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17259