Electronic synapses based on ultrathin quasi-two-dimensional gallium oxide memristor

Wang Shuopei^{1, 2}, He Congli^{1, 3, †}, Tang Jian^{1, 2}, Yang Rong^{1, 4}, Shi Dongxia^{1, 2, 4}, Zhang Guangyu^{1, 2, 4, 5, ‡}

(a) Illustration of a biological synaptic junction between the presynaptic and postsynaptic neurons (left) and the schematics of the two-terminal device geometry structure (right). (b) The EPSC decay after applying the 1st, 10th, 50th, and 100th pulses (100 ms, 2 V, separated by 1000 ms). (c) EPSC is triggered by one pulse with different pulse width time. The pulse amplitude was fixed at 2 V. (d) EPSC change ratio (I−I₀)/I₀ ×100% by reading after 100 ms and 15 s for different pulse width time. (e) The energy consumption during a single pulse with different pulse width time.