Field-enhanced design of steep-slope VO2 switches for low actuation voltage

The abrupt metal-insulator transition in vanadium dioxide (VO
₂
) offers novel performance and functionality for beyond CMOS switches, enabling simultaneous high ON current and ultra-steep subthreshold slope with low temperature dependence. We developed a field-enhanced design of 2-terminal VO
₂
switches that allows decreasing their actuation voltage without affecting their performance and reliability. Exploiting this design, we characterized VO
₂
switches with extremely abrupt transitions (<; 1 mV/dec) until 60°C and a reduction in actuation voltage up to 38.3% with respect to conventional devices.