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@ARTICLE{Jost:281807,
author = {Jost, Peter and Volker, Hanno and Poitz, Annika and
Poltorak, Christian and Zalden, Peter and Schäfer, Tobias
and Lange, Felix R. L. and Schmidt, Rüdiger M. and
Holländer, Bernhard and Wirtssohn, Matti R. and Wuttig,
Matthias},
title = {{D}isorder-{I}nduced {L}ocalization in {C}rystalline
{P}seudo-{B}inary {G}e{T}e-{S}b 2 {T}e 3 {A}lloys between
{G}e 3 {S}b 2 {T}e 6 and {G}e{T}e},
journal = {Advanced functional materials},
volume = {25},
number = {40},
issn = {1616-301X},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2016-01474},
pages = {6399 - 6406},
year = {2015},
abstract = {Disorder has a tremendous impact on charge transport in
crystalline compounds on the pseudo-binary line between
Sb2Te3 and GeTe. Directly after crystallization, the
pronounced disorder on the cation sublattice renders
crystalline Ge1Sb2Te4—a composition with a carrier density
of the order of 1020 cm−3—an Anderson insulator.
Annealing, however, induces the reduction of disorder and
eventually triggers an insulator-to-metal transition. This
study presents data on the electrical properties, the
optical conductivity, and structural properties of the
pseudo-binary compositions between Ge3Sb2Te6 and GeTe. In
contrast to the preceding investigations, which rely on the
annealing temperature for tuning the electrical properties,
this study elucidates the impact of stoichiometry and
demonstrates that the stoichiometry may be employed as an
alternative control parameter for the metal-to-insulator
transition. The combination of annealing temperature and
stoichiometry, therefore, provides a rich playground for
tailoring disorder and, as a consequence, the transport of
charge.},
cin = {PGI-9},
ddc = {620},
cid = {I:(DE-Juel1)PGI-9-20110106},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000363685900011},
doi = {10.1002/adfm.201500848},
url = {https://juser.fz-juelich.de/record/281807},
}