Energy and Performance Benchmarking of a Domain Wall-Magnetic Tunnel Junction Multibit Adder

T. Patrick Xiao, Matthew J. Marinella, Christopher H. Bennett, Xuan Hu, Ben Feinberg, Robin Jacobs-Gedrim, Sapan Agarwal, John S. Brunhaver, Joseph S. Friedman, Jean Anne C. Incorvia

Research output: Contribution to journalArticle

Abstract

The domain-wall (DW)-magnetic tunnel junction (MTJ) device implements universal Boolean logic in a manner that is naturally compact and cascadable. However, an evaluation of the energy efficiency of this emerging technology for standard logic applications is still lacking. In this article, we use a previously developed compact model to construct and benchmark a 32-bit adder entirely from DW-MTJ devices that communicates with DW-MTJ registers. The results of this large-scale design and simulation indicate that while the energy cost of systems driven by spin-Transfer torque (STT) DW motion is significantly higher than previously predicted, the same concept using spin-orbit torque (SOT) switching benefits from an improvement in the energy per operation by multiple orders of magnitude, attaining competitive energy values relative to a comparable CMOS subprocessor component. This result clarifies the path toward practical implementations of an all-magnetic processor system.

Original languageEnglish (US)
Article number8910439
Pages (from-to)188-196
Number of pages9
JournalIEEE Journal on Exploratory Solid-State Computational Devices and Circuits
Volume5
Issue number2
DOIs
StatePublished - Dec 2019
Externally publishedYes

Keywords

  • Benchmarking
  • domain wall (DW)
  • magnetic logic
  • magnetic tunnel junction (MTJ)
  • post-CMOS logic
  • spintronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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  • Cite this

    Patrick Xiao, T., Marinella, M. J., Bennett, C. H., Hu, X., Feinberg, B., Jacobs-Gedrim, R., Agarwal, S., Brunhaver, J. S., Friedman, J. S., & Incorvia, J. A. C. (2019). Energy and Performance Benchmarking of a Domain Wall-Magnetic Tunnel Junction Multibit Adder. IEEE Journal on Exploratory Solid-State Computational Devices and Circuits, 5(2), 188-196. [8910439]. https://doi.org/10.1109/JXCDC.2019.2955016