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Revisiting the Local Structure in Ge-Sb-Te based Chalcogenide Superlattices.

ABSTRACT: The technological success of phase-change materials in the field of data storage and functional systems stems from their distinctive electronic and structural peculiarities on the nanoscale. Recently, superlattice structures have been demonstrated to dramatically improve the optical and electrical performances of these chalcogenide based phase-change materials. In this perspective, unravelling the atomistic structure that originates the improvements in switching time and switching energy is paramount in order to design nanoscale structures with even enhanced functional properties. This study reveals a high- resolution atomistic insight of the [GeTe/Sb2Te3] interfacial structure by means of Extended X-Ray Absorption Fine Structure spectroscopy and Transmission Electron Microscopy. Based on our results we propose a consistent novel structure for this kind of chalcogenide superlattices.

SUBMITTER: Casarin B

PROVIDER: S-EPMC4772802 | biostudies-other | 2016

REPOSITORIES: biostudies-other

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Revisiting the Local Structure in Ge-Sb-Te based Chalcogenide Superlattices.

Casarin Barbara B Caretta Antonio A Momand Jamo J Kooi Bart J BJ Verheijen Marcel A MA Bragaglia Valeria V Calarco Raffaella R Chukalina Marina M Yu Xiaoming X Robertson John J Lange Felix R L FR Wuttig Matthias M Redaelli Andrea A Varesi Enrico E Parmigiani Fulvio F Malvestuto Marco M

Scientific reports 20160301

The technological success of phase-change materials in the field of data storage and functional systems stems from their distinctive electronic and structural peculiarities on the nanoscale. Recently, superlattice structures have been demonstrated to dramatically improve the optical and electrical performances of these chalcogenide based phase-change materials. In this perspective, unravelling the atomistic structure that originates the improvements in switching time and switching energy is para ...[more]

PMID: 26926116

Dataset Information

Revisiting the Local Structure in Ge-Sb-Te based Chalcogenide Superlattices.

Publications

Revisiting the Local Structure in Ge-Sb-Te based Chalcogenide Superlattices.

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