Physically Unclonable Function using GSHE driven SOT assisted p-MTJ for next generation hardware security applications

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11 Scopus citations

Abstract

The increasing threat of security attacks on hardware security applications has driven research towards exploring beyond CMOS devices as an alternative. Spintronic devices offer advantages like low power, non-volatility, inherent spatial and temporal randomness, simplicity of integration with a silicon substrate, etc., making them a potential candidate for next-generation hardware security systems. In this work, we explore the Giant Spin Hall effect (GSHE) driven spin-orbit torque magnetic tunnel junction (MTJ) implementing physically unclonable function (PUFs). The effect of process variation is considered in key MTJ parameters like TMR ratio, free and oxide layer thickness following Gaussian distribution, and Monte-Carlo simulations to determine the effect of the process variations. A unique challenge-response (C-R) pair is obtained utilizing the inherent variations in magnetization dynamics of the free layer due to process variations.

Original languageEnglish (US)
Pages (from-to)1
Number of pages1
JournalIEEE Access
DOIs
StateAccepted/In press - 2022

Bibliographical note

Publisher Copyright:
Author

Keywords

  • Giant spin Hall Effect (GSHE)
  • Hardware
  • hardware security
  • magnetic tunnel junction (MTJ)
  • Magnetic tunneling
  • physical unclonable functions (PUFs)
  • Resistance
  • Security
  • spin-orbit torque (SOT)
  • spintronic
  • Spintronics
  • Switches
  • Torque

ASJC Scopus subject areas

  • General Computer Science
  • General Materials Science
  • General Engineering

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