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

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 VO Mott switches. Using a model system of Pt-NP-VO single-crystal-like films, interestingly, the embedded Pt NPs provide 33.