Unconventional resistive switching behavior in ferroelectric tunnel junctions

We investigate an unconventional resistive switching (RS) behavior in La0.67Sr0.33MnO3/BaTiO3/metal (LSMO/BTO) ferroelectric tunnel junctions (FTJs), which is dominated by the variation of the barrier potential profile modulated by the migration of oxygen vacancies in the p-LSMO/n-BTO junction. The...

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Published in:Physical chemistry chemical physics : PCCP Vol. 17; no. 15; p. 10146
Main Authors: Mao, H J, Song, C, Xiao, L R, Gao, S, Cui, B, Peng, J J, Li, F, Pan, F
Format: Journal Article
Language:English
Published: England 21.04.2015
ISSN:1463-9084, 1463-9084
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Summary:We investigate an unconventional resistive switching (RS) behavior in La0.67Sr0.33MnO3/BaTiO3/metal (LSMO/BTO) ferroelectric tunnel junctions (FTJs), which is dominated by the variation of the barrier potential profile modulated by the migration of oxygen vacancies in the p-LSMO/n-BTO junction. The LSMO/BTO/Co junction exhibits a remarkable self-rectifying effect ascribed to the high-density interface state at the BTO/Co interface, in contrast to the symmetric conductivity when the top metal electrode is inert Pt. The effects of ferroelectric polarization on the RS behavior are also emphasized. Our work builds a bridge between FTJs and resistive random access memory devices.
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ISSN:1463-9084
1463-9084
DOI:10.1039/c5cp00421g