AUTHOR=Kim Dong Won , Yi Woo Seok , Choi Jin Young , Ashiba Kei , Baek Jong Ung , Jun Han Sol , Kim Jae Joon , Park Jea Gun 

TITLE=Double MgO-Based Perpendicular Magnetic Tunnel Junction for Artificial Neuron

JOURNAL=Frontiers in Neuroscience

VOLUME=14

YEAR=2020

URL=https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2020.00309

DOI=10.3389/fnins.2020.00309

ISSN=1662-453X

ABSTRACT=<p>A perpendicular spin transfer torque (p-STT)-based neuron was developed for a spiking neural network (SNN). It demonstrated the integration behavior of a typical neuron in an SNN; in particular, the integration behavior corresponding to magnetic resistance change gradually increased with the input spike number. This behavior occurred when the spin electron directions between double Co<sub>2</sub>Fe<sub>6</sub>B<sub>2</sub> free and pinned layers in the p-STT-based neuron were switched from parallel to antiparallel states. In addition, a neuron circuit for integrate-and-fire operation was proposed. Finally, pattern-recognition simulation was performed for a single-layer SNN.</p>