Journal
SMALL
Volume 16, Issue 23, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202001307
Keywords
complex oxides; memristor; metal-insulator transition; resistive switching; scanning probe microscopy
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Funding
- Spanish Ministry of Economy and Competitiveness through the Severo Ochoa Programme for Centres of Excellence in RD [SEV-2015-0496]
- Spanish Ministry of Economy and Competitiveness through CONSOLIDER Excellence Network [MAT2015-68994-REDC]
- Spanish Ministry of Economy and Competitiveness through COACHSUPENERGY project [MAT2014-56063-C2-1-R, SuMaTe RTI2018-095853-B-C21]
- Spanish Ministry of Economy and Competitiveness through OXSWITCH project - Centro Superior de Investigaciones Cientificas (CSIC)
- Catalan Government [2017-SGR-1519]
- EU COST action [NANOCOHYBRI CA16218]
- Spanish Ministry of Economy [BES-2012-053814]
- European Regional Development Fund
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Strongly correlated perovskite oxides are a class of materials with fascinating intrinsic physical functionalities due to the interplay of charge, spin, orbital ordering, and lattice degrees of freedom. Among the exotic phenomena arising from such an interplay, metal-insulator transitions (MITs) are fundamentally still not fully understood and are of large interest for novel nanoelectronics applications, such as resistive switching-based memories and neuromorphic computing devices. In particular, rare-earth nickelates and lanthanum strontium manganites are archetypical examples of bandwidth-controlled and band-filling-controlled MIT, respectively, which are used in this work as a playground to correlate the switching characteristics of the oxides and their MIT properties by means of local probe techniques in a systematic manner. These findings suggest that an electric-field-induced MIT can be triggered in these strongly correlated systems upon generation of oxygen vacancies and establish that lower operational voltages and larger resistance ratios are obtained in those films where the MIT lies closer to room temperature. This work demonstrates the potential of using MITs in the next generation of nanoelectronics devices.
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