Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.4914111
Title: Spin-orbit torque induced spike-timing dependent plasticity
Authors: Sengupta, Abhronil
Al Azim, Zubair
Fong, Xuanyao 
Roy, Kaushik
Keywords: Science & Technology
Physical Sciences
Physics, Applied
Physics
MEMRISTOR
SYSTEMS
Issue Date: 2-Mar-2015
Publisher: AMER INST PHYSICS
Citation: Sengupta, Abhronil, Al Azim, Zubair, Fong, Xuanyao, Roy, Kaushik (2015-03-02). Spin-orbit torque induced spike-timing dependent plasticity. APPLIED PHYSICS LETTERS 106 (9). ScholarBank@NUS Repository. https://doi.org/10.1063/1.4914111
Abstract: © 2015 AIP Publishing LLC. Nanoelectronic devices that mimic the functionality of synapses are a crucial requirement for performing cortical simulations of the brain. In this work, we propose a ferromagnet-heavy metal heterostructure that employs spin-orbit torque to implement spike-timing dependent plasticity. The proposed device offers the advantage of decoupled spike transmission and programming current paths, thereby leading to reliable operation during online learning. Possible arrangement of such devices in a crosspoint architecture can pave the way for ultra-dense neural networks. Simulation studies indicate that the device has the potential of achieving pico-Joule level energy consumption (maximum 2 pJ per synaptic event) which is comparable to the energy consumption for synaptic events in biological synapses.
Source Title: APPLIED PHYSICS LETTERS
URI: https://scholarbank.nus.edu.sg/handle/10635/156188
ISSN: 0003-6951
1077-3118
DOI: 10.1063/1.4914111
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