標題: Characterization and Modeling of Nonfilamentary Ta/TaOx/TiO2/Ti Analog Synaptic Device
作者: Wang, Yu-Fen
Lin, Yen-Chuan
Wang, I-Ting
Lin, Tzu-Ping
Hou, Tuo-Hung
電機工程學系
Department of Electrical and Computer Engineering
公開日期: 8-五月-2015
摘要: A two-terminal analog synaptic device that precisely emulates biological synaptic features is expected to be a critical component for future hardware-based neuromorphic computing. Typical synaptic devices based on filamentary resistive switching face severe limitations on the implementation of concurrent inhibitory and excitatory synapses with low conductance and state fluctuation. For overcoming these limitations, we propose a Ta/TaOx/TiO2/Ti device with superior analog synaptic features. A physical simulation based on the homogeneous (nonfilamentary) barrier modulation induced by oxygen ion migration accurately reproduces various DC and AC evolutions of synaptic states, including the spike-timing-dependent plasticity and paired-pulse facilitation. Furthermore, a physics-based compact model for facilitating circuit-level design is proposed on the basis of the general definition of memristor devices. This comprehensive experimental and theoretical study of the promising electronic synapse can facilitate realizing large-scale neuromorphic systems.
URI: http://dx.doi.org/10.1038/srep10150
http://hdl.handle.net/11536/124645
ISSN: 2045-2322
DOI: 10.1038/srep10150
期刊: SCIENTIFIC REPORTS
顯示於類別:期刊論文