RESET current and DC switching cycles with current compliances. (a) RESET current (I
RESET) with current compliances. The LRS decreases with increasing CCs. (b) DC switching cycles (>103) with different current compliances. The thickness of the switching material is about 15 nm. A 100-Ω series resistance was used during endurance measurement. The device size is 1 × 1 μm2 .