fig3
Figure 3. Example of memristive materials. Operational principles and band diagrams of (A) ReRAM, (B) Mott insulator, (C) PCM, and (D) Ferroelectric memristor. (B) Reproduced with permission Copyright 2017, Nature Communications[64]. (A, C, D) Reproduced with permission Copyright 2020, Nature Communications[65]. ReRAM: Resistive random access memory; PCM: phase change memory.