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Título

Complementary Resistive Switching Using Metal–Ferroelectric–Metal Tunnel Junctions

AutorMengdi, Qian; Fina, Ignasi CSIC ORCID CVN ; Sánchez Barrera, Florencio CSIC ORCID; Fontcuberta, Josep CSIC ORCID
Palabras claveBaTiO3
Complementary resistive switching
Ferroelectric
Ferroelectric tunnel junctions
Fecha de publicación15-mar-2019
EditorWiley-VCH
CitaciónSmall 15(11): 1805042 (2019)
ResumenComplementary resistive switching (CRS) devices are receiving attention because they can potentially solve the current‐sneak and current‐leakage problems of memory arrays based on resistive switching (RS) elements. It is shown here that a simple anti‐serial connection of two ferroelectric tunnel junctions, based on BaTiO3, with symmetric top metallic electrodes and a common, floating bottom nanometric film electrode, constitute a CRS memory element. It allows nonvolatile storage of binary states (“1” = “HRS+LRS” and “0” = “LRS+HRS”), where HRS (LRS) indicate the high (low) resistance state of each ferroelectric tunnel junction. Remarkably, these states have an identical and large resistance in the remanent state, characteristic of CRS. Here, protocols for writing information are reported and it is shown that non‐destructive or destructive reading schemes can be chosen by selecting the appropriate reading voltage amplitude. Moreover, this dual‐tunnel device has a significantly lower power consumption than a single ferroelectric tunnel junction to perform writing/reading functions, as is experimentally demonstrated. These findings illustrate that the recent impressive development of ferroelectric tunnel junctions can be further exploited to contribute to solving critical bottlenecks in data storage and logic functions implemented using RS elements.
Versión del editorhttp://dx.doi.org/10.1002/smll.201805042
URIhttp://hdl.handle.net/10261/181854
ISSN1613-6810
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