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@ARTICLE{Soni:186402,
author = {Soni, Rohit and Petraru, Adrian and Meuffels, Paul and
Vavra, Ondrej and Ziegler, Martin and Kim, Seong Keun and
Jeong, Doo Seok and Pertsev, Nikolay A. and Kohlstedt,
Hermann},
title = {{G}iant electrode effect on tunnelling electroresistance in
ferroelectric tunnel junctions},
journal = {Nature Communications},
volume = {5},
issn = {2041-1723},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2015-00478},
pages = {5414},
year = {2014},
abstract = {Among recently discovered ferroelectricity-related
phenomena, the tunnelling electroresistance (TER) effect in
ferroelectric tunnel junctions (FTJs) has been attracting
rapidly increasing attention owing to the emerging
possibilities of non-volatile memory, logic and neuromorphic
computing applications of these quantum nanostructures.
Despite recent advances in experimental and theoretical
studies of FTJs, many questions concerning their electrical
behaviour still remain open. In particular, the role of
ferroelectric/electrode interfaces and the separation of the
ferroelectric-driven TER effect from electrochemical
(‘redox’-based) resistance-switching effects have to be
clarified. Here we report the results of a comprehensive
study of epitaxial junctions comprising BaTiO3 barrier,
La0.7Sr0.3MnO3 bottom electrode and Au or Cu top
electrodes. Our results demonstrate a giant electrode effect
on the TER of these asymmetric FTJs. The revealed phenomena
are attributed to the microscopic interfacial effect of
ferroelectric origin, which is supported by the observation
of redox-based resistance switching at much higher voltages},
cin = {PGI-7},
ddc = {500},
cid = {I:(DE-Juel1)PGI-7-20110106},
pnm = {421 - Frontiers of charge based Electronics (POF2-421)},
pid = {G:(DE-HGF)POF2-421},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000345624800035},
pubmed = {pmid:25399545},
doi = {10.1038/ncomms6414},
url = {https://juser.fz-juelich.de/record/186402},
}