Unpublished conference/Abstract (Scientific congresses and symposiums)
Aging mechanisms in amorphous GeTe (Invited)
Raty, Jean-Yves; Zhang, wei; Luckas, Jennifer et al.
2014E\PCOS 2014 Symposium
Editorial reviewed
 

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Keywords :
phase change material; ab initio; drift; aging; molecular dynamics
Abstract :
[en] We investigate the structure of amorphous GeTe using Density Functional Theory based Molecular Dynamics, using either the standard Generalized Gradient Approximation, or the more elaborate van der Waals approximation that proves more accurate in this system. New insight is provided on the stability of homopolar GeGe bonds and tetrahedral Ge bonding, in relation with the resistance drift phenomenon, that is investigated experimentally using photothermal deflection spectroscopy experiments.
Disciplines :
Physics
Author, co-author :
Raty, Jean-Yves  ;  Université de Liège > Département de physique > Physique expérimentale des matériaux nanostructurés
Zhang, wei
Luckas, Jennifer
Mazzarello, Riccardo
Bichara, Christophe
Wuttig, Matthias
Language :
English
Title :
Aging mechanisms in amorphous GeTe (Invited)
Publication date :
08 September 2014
Event name :
E\PCOS 2014 Symposium
Event organizer :
Universite de Marseille
Event place :
Marseille, France
Event date :
07-09-2014 to 09-09-2014
By request :
Yes
Audience :
International
Peer reviewed :
Editorial reviewed
Funders :
FWB - Fédération Wallonie-Bruxelles [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
DGTRE - Région wallonne. Direction générale des Technologies, de la Recherche et de l'Énergie [BE]
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