期刊
IEEE ELECTRON DEVICE LETTERS
卷 38, 期 9, 页码 1208-1211出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2017.2722463
关键词
Memristor; synapse; short-term plasticity; long-term plasticity
资金
- National Natural Science Foundation of China [61521064, 61422407, 61474136, 61334007, 61574166, 61522408]
- National High Technology Research Development Program [2017YFB0405603, 2016YFA0201803, 2014AA032900]
- Beijing Training Project for the Leading Talents in ST [ljrc201508]
- Opening Project of Key Laboratory of Microelectronics Devices & Integrated Technology, Institute of Microelectronics, the Chinese Academy of Sciences
Short-term plasticity and long-term plasticity of bio-synapseare thought to underpin critical physiological functions in neural circuits. In this letter, we vividly emulated the short-term and long-term synaptic functions in a single Cu/a-Si/Pt memristor. By controlling the injection quantity of Cu cations into the a-Si layer, the device showed volatile and non-volatile resistive switching behaviors. Owing to the unique characteristics of Cu/a-Si/Pt device, the short-term synaptic functions, i.e., short-term potentiation, pair-pulse facilitation, and long-term functions, i.e., long-term potentiation/depression, spike-timing-dependent plasticity, were mimicked in the memristor successfully. Furthermore, the transition from short-term memory to long-term memory of the device was also observed under repeated stimuli. The experimental results confirm that the Cu/a-Si/Pt memristor with various synaptic behaviors has a potential application in the brain-inspired computing systems.
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