Embedded metallic nanoparticles facilitate metastability of switchable metallic domains in Mott threshold switches.

ABSTRACT: Mott threshold switching, which is observed in quantum materials featuring an electrically fired insulator-to-metal transition, calls for delicate control of the percolative dynamics of electrically switchable domains on a nanoscale. Here, we demonstrate that embedded metallic nanoparticles (NP) dramatically promote metastability of switchable metallic domains in single-crystal-like VO₂ Mott switches. Using a model system of Pt-NP-VO₂ single-crystal-like films, interestingly, the embedded Pt NPs provide 33.3 times longer 'memory' of previous threshold metallic conduction by serving as pre-formed 'stepping-stones' in the switchable VO₂ matrix by consecutive electical pulse measurement; persistent memory of previous firing during the application of sub-thresh

SUBMITTER: Jo M 

PROVIDER: S-EPMC9365788 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature