Discharging and recharging of anomalous positive charges in MOSFETs

The discharging of positive charges is found to increase with bias. Following the same discharging, higher recharging bias leads to larger recharging of APC. However, under the same recharging bias with different previous discharging, the recharging does show a different response. In particular, there is larger recharging after the larger previous discharging, whatever the same recharging bias