A two-terminal perpendicular spin-transfer torque based artificial neuron
- Authors
- Kondo, Kei; Choi, Jin-Young; Baek, Jong-Ung; Jun, Han-Sol; Jung, Sunhwa; Shim, Tae-Hun; Park, Jea Gun
- Issue Date
- Dec-2018
- Publisher
- IOP PUBLISHING LTD
- Keywords
- p-STT MTJ; p-STT neuron; integrate-and-fire
- Citation
- JOURNAL OF PHYSICS D-APPLIED PHYSICS, v.51, no.50
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICS D-APPLIED PHYSICS
- Volume
- 51
- Number
- 50
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/5231
- DOI
- 10.1088/1361-6463/aad592
- ISSN
- 0022-3727
- Abstract
- A two-terminal perpendicular spin-transfer torque (p-STT) based neuron with a 100 x 100 nm device size was fabricated with a p-STT magnetic tunneling junction (MTJ) spin valve. It performed well in the integrate-and-fire event of the input voltage pulse (spike) cycles, which originate from the imperfect structure of the MgO tunneling barrier in a p-STT MTJ spin valve (i.e. a nano-scale poly-grain size distribution of the MgO tunneling barrier). In particular, the integrate-and-fire cycles rapidly increase as the input voltage pulse (spike) amplitude, width, and external assistant perpendicular magnetic field decrease.
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