Three Artificial Spintronic Leaky Integrate-and-Fire Neurons

Brigner, Wesley H.; Hu, Xuan; Hassan, Naimul; Jiang-Wei, Lucian; Bennett, Christopher H.; Garcia-Sanchez, Felipe; Akinola, Otitoaleke; Pasquale, Massimo; Marinella, Matthew J.; Incorvia, Jean Anne C.; Friedman, Joseph S.

doi:10.1142/S2010324720400032

Three Artificial Spintronic Leaky Integrate-and-Fire Neurons

Journal Article · Thu Jun 25 00:00:00 EDT 2020 · SPIN

DOI:https://doi.org/10.1142/S2010324720400032· OSTI ID:1618070

Brigner, Wesley H. ^[1]; Hu, Xuan ^[1]; Hassan, Naimul ^[1]; Jiang-Wei, Lucian ^[1]; Bennett, Christopher H. ^[2]; Garcia-Sanchez, Felipe ^[3]; Akinola, Otitoaleke ^[4]; Pasquale, Massimo ^[5]; Marinella, Matthew J. ^[2]; Incorvia, Jean Anne C. ^[4]; ^[1]

Univ. of Texas at Dallas, Richardson, TX (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Istituto Nazionale di Ricerca Metrologica, Torino (Italy); Universidad de Salamanca (Spain)
Univ. of Texas, Austin, TX (United States)
Istituto Nazionale di Ricerca Metrologica, Torino (Italy)

We report that due to their non-volatility and intrinsic current integration capabilities, spintronic devices that rely on domain wall (DW) motion through a free ferromagnetic track have garnered significant interest in the field of neuromorphic computing. Although a number of such devices have already been proposed, they require the use of external circuitry to implement several important neuronal behaviors. As such, they are likely to result in either a decrease in energy efficiency, an increase in fabrication complexity, or even both. To resolve this issue, we have proposed three individual neurons that are capable of performing these functionalities without the use of an external circuitry. To implement leaking, the first neuron uses a dipolar coupling field, the second uses an anisotropy gradient, and the third uses shape variations of the DW track.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)

Grant/Contract Number:: AC04-94AL85000; NA0003525

OSTI ID:: 1618070

Report Number(s):: SAND--2019-15415J; 682016

Journal Information:: SPIN, Journal Name: SPIN Journal Issue: 2 Vol. 10; ISSN 2010-3247

Publisher:: World ScientiicCopyright Statement

Country of Publication:: United States

Language:: English

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