Uniform Complementary Resistive Switching in Tantalum Oxide Using Current Sweeps

Tantalum oxide (TaO
_x
) is an advantageous material system to realize complementary resistive switches, but the ON-window starts to shrink after a few cycles in the voltage sweep mode. A power analysis reveals the presence of power boosts during conventional voltage sweeps in the nonswitching part cell. This power stress is significantly reduced by the use of current sweeps with voltage compliance, leading to very reproducible switching. The endurance is raised to >; 30000 cycles.