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@ARTICLE{Piarristeguy:288101,
author = {Piarristeguy, A. A. and Micoulaut, M. and Escalier, R. and
Jóvári, P. and Kaban, I. and van Eijk, J. and Luckas, J.
and Ravindren, S. and Boolchand, P. and Pradel, A.},
title = {{S}tructural singularities in
$\mathrm{{G}e_{x}{T}e_{100−x}}$ films},
journal = {The journal of chemical physics},
volume = {143},
number = {7},
issn = {1089-7690},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {PUBDB-2015-04813},
pages = {074502},
year = {2015},
note = {(c) AIP Publishing LLC. Post referee full text in
progress.},
abstract = {Structural and calorimetric investigation of
Ge$_{x}$Te$_{100−x}$ films over wide range of
concentration 10 < x < 50 led to evidence two structural
singularities at x ~ 22 at. \% and x ~ 33-35 at. \%.
Analysis of bond distribution, bond variability, and glass
thermal stability led to conclude to the origin of the first
singularity being the flexible/rigid transition proposed in
the framework of rigidity model and the origin of the second
one being the disappearance of the undercooled region
resulting in amorphous materials with statistical
distributions of bonds. While the first singularity signs
the onset of the Ge–Ge homopolar bonds, the second is
related to compositions where enhanced Ge–Ge correlations
at intermediate lengthscales (7.7 Å) are observed. These
two threshold compositions correspond to recently reported
resistance drift threshold compositions, an important
support for models pointing the breaking of homopolar
Ge–Ge bonds as the main phenomenon behind the ageing of
phase change materials.},
cin = {DOOR},
ddc = {540},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {899 - ohne Topic (POF3-899) / FS-Proposal: II-20060203
(II-20060203) / FS-Proposal: II-20100137 EC
(II-20100137-EC)},
pid = {G:(DE-HGF)POF3-899 / G:(DE-H253)II-20060203 /
G:(DE-H253)II-20100137-EC},
experiment = {EXP:(DE-H253)D-BW5-20150101 / EXP:(DE-H253)D-X1-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000360440400035},
pubmed = {pmid:26298140},
doi = {10.1063/1.4928504},
url = {https://bib-pubdb1.desy.de/record/288101},
}