skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Three-terminal magnetic tunnel junction synapse circuits showing spike-timing-dependent plasticity

Journal Article · · Journal of Physics. D, Applied Physics

There have been recent efforts towards the development of biologically-inspired neuromorphic devices and architecture. In this work, we demonstrate a synapse circuit that is designed to perform spike-timing-dependent plasticity which works with the leaky, integrate, and fire neuron in a neuromorphic computing architecture. The circuit consists of a three-terminal magnetic tunnel junction with a mobile domain wall between two low-pass filters and has been modeled in SPICE. The findings show that the current flowing through the synapse is highly correlated to the timing delay between the pre-synaptic and post-synaptic neurons. Using micromagnetic simulations, we show that introducing notches along the length of the domain wall track pins the domain wall at each successive notch to properly respond to the timing between the input and output current pulses of the circuit, producing a multi-state resistance representing synaptic weights. We show in SPICE that a notch-free ideal magnetic device also shows spike-timing dependent plasticity in response to the circuit current. This work is key progress towards making more bio-realistic artificial synapses with multiple weights, which can be trained online with a promise of CMOS compatibility and energy efficiency.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
1574455
Report Number(s):
SAND-2019-12134J; 680164; TRN: US2001334
Journal Information:
Journal of Physics. D, Applied Physics, Vol. 52, Issue 49; ISSN 0022-3727
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

References (66)

Modelling the molecular mechanisms of synaptic plasticity using systems biology approaches journal April 2010
Selective domain wall depinning by localized Oersted fields and Joule heating journal September 2008
Single pairing spike-timing dependent plasticity in BiFeO3 memristors with a time window of 25 ms to 125 μs journal June 2015
Integrate-and-Fire (I&F) Neuron Circuit Using Resistive-Switching Random Access Memory (RRAM) journal May 2017
Ground and river water quality monitoring using a smartphone-based pH sensor journal May 2015
Spike timing dependent plasticity: a consequence of more fundamental learning rules journal January 2010
The design and verification of MuMax3 journal October 2014
Reliable Multivalued Conductance States in TaO x Memristors through Oxygen Plasma-Assisted Electrode Deposition with in Situ-Biased Conductance State Transmission Electron Microscopy Analysis journal July 2018
Stochastic Properties of Synaptic Transmission Affect the Shape of Spike Time–Dependent Plasticity Curves journal February 2005
Mechanisms of induction and maintenance of spike-timing dependent plasticity in biophysical synapse models journal January 2010
The Formation of Multi-synaptic Connections by the Interaction of Synaptic and Structural Plasticity and Their Functional Consequences journal January 2015
Neuromodulated Spike-Timing-Dependent Plasticity, and Theory of Three-Factor Learning Rules journal January 2016
Ultrastructural Characterization of the Lower Motor System in a Mouse Model of Krabbe Disease journal December 2016
Capacity analysis in multi-state synaptic models: a retrieval probability perspective journal October 2010
Synchronous Circuit Design With Beyond-CMOS Magnetoelectric Spin–Orbit Devices Toward 100-mV Logic journal June 2019
Synaptic computation journal October 2004
Benchmarking of Beyond-CMOS Exploratory Devices for Logic Integrated Circuits journal January 2015
Phase change memory as synapse for ultra-dense neuromorphic systems: Application to complex visual pattern extraction conference December 2011
Reservoir computing using dynamic memristors for temporal information processing journal December 2017
Current-driven domain-wall motion in magnetic wires with asymmetric notches journal December 2005
Current-driven domain-wall depinning journal July 2005
Track heating study for current-induced domain wall motion experiments journal December 2010
Spintronic Nanodevices for Bioinspired Computing journal October 2016
Magnetic domain wall neuron with lateral inhibition journal October 2018
Filamentary Switching: Synaptic Plasticity through Device Volatility journal January 2015
Spin-Transfer Torque Magnetic Memory as a Stochastic Memristive Synapse for Neuromorphic Systems journal April 2015
Proposal for an All-Spin Artificial Neural Network: Emulating Neural and Synaptic Functionalities Through Domain Wall Motion in Ferromagnets journal December 2016
Composable Probabilistic Inference Networks Using MRAM-based Stochastic Neurons
  • Zand, Ramtin; Camsari, Kerem Y.; Datta, Supriyo
  • ACM Journal on Emerging Technologies in Computing Systems, Vol. 15, Issue 2 https://doi.org/10.1145/3304105
journal March 2019
Neuromorphic computing enabled by physics of electron spins: Prospects and perspectives journal February 2018
Short-Term Memory to Long-Term Memory Transition in a Nanoscale Memristor journal August 2011
All Spin Artificial Neural Networks Based on Compound Spintronic Synapse and Neuron journal August 2016
SPICE-Only Model for Spin-Transfer Torque Domain Wall MTJ Logic journal June 2019
The Developing Brain journal September 1992
The emergence of spin electronics in data storage journal November 2007
Spin wave based synapse and neuron for ultra low power neuromorphic computation system conference May 2016
Low Energy Magnetic Domain Wall Logic in Short, Narrow, Ferromagnetic Wires journal January 2012
Logic circuit prototypes for three-terminal magnetic tunnel junctions with mobile domain walls journal January 2016
Synaptic plasticity and learning behaviours mimicked through Ag interface movement in an Ag/conducting polymer/Ta memristive system journal January 2013
Emerging Memory Devices for Neuromorphic Computing journal January 2019
Neuromorphic computing using non-volatile memory journal October 2016
Exploiting the short-term to long-term plasticity transition in memristive nanodevice learning architectures conference July 2016
Encoding neural and synaptic functionalities in electron spin: A pathway to efficient neuromorphic computing journal December 2017
Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers journal September 2016
Magnetic Tunnel Junction Based Long-Term Short-Term Stochastic Synapse for a Spiking Neural Network with On-Chip STDP Learning journal July 2016
Synaptic Modification by Correlated Activity: Hebb's Postulate Revisited journal March 2001
Overview of Beyond-CMOS Devices and a Uniform Methodology for Their Benchmarking journal December 2013
Spin–orbit torques in action journal February 2014
Chain of magnetic tunnel junctions as a spintronic memristor journal October 2018
Magnetic Domain-Wall Racetrack Memory journal April 2008
Demonstration of spike timing dependent plasticity in CBRAM devices with silicon neurons conference May 2016
Publisher’s Note: “Reduction of internal polarization fields in InGaN quantum wells by InGaN/AlGaN ultra-thin superlattice barriers with different indium” [J. Appl. Phys. 110, 123108 (2011)] journal February 2012
Energy-efficient neuromorphic computation based on compound spin synapse with stochastic learning conference May 2015
Perspective: Spintronic synapse for artificial neural network journal October 2018
Current-Controlled Magnetic Domain-Wall Nanowire Shift Register journal April 2008
IBM's new brain [News] journal October 2014
Self-Adaptive Spike-Time-Dependent Plasticity of Metal-Oxide Memristors journal February 2016
Current-induced domain wall motion journal April 2008
The formation of multi-synaptic connections by the interaction of synaptic and structural plasticity and their functional consequences text January 2014
Composable Probabilistic Inference Networks Using MRAM-based Stochastic Neurons text January 2018
The developing brain journal February 2012
The formation of multi-synaptic connections by the interaction of synaptic and structural plasticity and their functional consequences journal July 2014
Self-Adaptive Spike-Time-Dependent Plasticity of Metal-Oxide Memristors text January 2015
Proposal for an All-Spin Artificial Neural Network: Emulating Neural and Synaptic Functionalities Through Domain Wall Motion in Ferromagnets text January 2015
Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers text January 2016
Encoding Neural and Synaptic Functionalities in Electron Spin: A Pathway to Efficient Neuromorphic Computing preprint January 2017
Current-driven domain wall motion in magnetic wires with asymmetric notches text January 2005