Universität zu Köln

Casarin, Barbara, Caretta, Antonio, Momand, Jamo ORCID: 0000-0001-5153-2427, Kooi, Bart J. ORCID: 0000-0002-0311-4105, Verheijen, Marcel A., Bragaglia, Valeria, Calarco, Raffaella, Chukalina, Marina, Yu, Xiaoming, Robertson, John, Lange, Felix R. L., Wuttig, Matthias ORCID: 0000-0003-1498-1025, Redaelli, Andrea, Varesi, Enrico, Parmigiani, Fulvio and Malvestuto, Marco (2016). Revisiting the Local Structure in Ge-Sb-Te based Chalcogenide Superlattices. Sci Rep, 6. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Casarin, Barbara UNSPECIFIED UNSPECIFIED UNSPECIFIED Caretta, Antonio UNSPECIFIED UNSPECIFIED UNSPECIFIED Momand, Jamo UNSPECIFIED orcid.org/0000-0001-5153-2427 UNSPECIFIED Kooi, Bart J. UNSPECIFIED orcid.org/0000-0002-0311-4105 UNSPECIFIED Verheijen, Marcel A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bragaglia, Valeria UNSPECIFIED UNSPECIFIED UNSPECIFIED Calarco, Raffaella UNSPECIFIED UNSPECIFIED UNSPECIFIED Chukalina, Marina UNSPECIFIED UNSPECIFIED UNSPECIFIED Yu, Xiaoming UNSPECIFIED UNSPECIFIED UNSPECIFIED Robertson, John UNSPECIFIED UNSPECIFIED UNSPECIFIED Lange, Felix R. L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wuttig, Matthias UNSPECIFIED orcid.org/0000-0003-1498-1025 UNSPECIFIED Redaelli, Andrea UNSPECIFIED UNSPECIFIED UNSPECIFIED Varesi, Enrico UNSPECIFIED UNSPECIFIED UNSPECIFIED Parmigiani, Fulvio UNSPECIFIED UNSPECIFIED UNSPECIFIED Malvestuto, Marco UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-283371
DOI:	10.1038/srep22353
Journal or Publication Title:	Sci Rep
Volume:	6
Date:	2016
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PHASE-CHANGE MATERIALS; BONDED MATERIALS Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/28337