Neural coding using telegraphic switching of magnetic tunnel junction

Journal Article · Thu May 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4914071· OSTI ID:22410099

Suh, Dong Ik; Bae, Gi Yoon; Oh, Heong Sik; Park, Wanjun ^[1]

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1. Department of Electronic Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of)

In this work, we present a synaptic transmission representing neural coding with spike trains by using a magnetic tunnel junction (MTJ). Telegraphic switching generates an artificial neural signal with both the applied magnetic field and the spin-transfer torque that act as conflicting inputs for modulating the number of spikes in spike trains. The spiking probability is observed to be weighted with modulation between 27.6% and 99.8% by varying the amplitude of the voltage input or the external magnetic field. With a combination of the reverse coding scheme and the synaptic characteristic of MTJ, an artificial function for the synaptic transmission is achieved.

• OSTI ID: 22410099
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRIC POTENTIAL
MAGNETIC FIELDS
MODULATION
SPIN
SUPERCONDUCTING JUNCTIONS
TORQUE
TRANSMISSION
TUNNEL EFFECT