Ultrafast metal-insulator varistors based on tunable Al_2O_3 tunnel junctions

摘要

Ultrafast metal-insulator varistors have been fabricated using atomic layer deposition. A high-density matrix of micron-sized spherical Ni particles conformally coated with ～7.5-22 nm Al_2O_3 films exhibited transient response times (～0.3 ns), capacitance