JOURNAL ARTICLE

A high-speed and power-efficient gradient-pulse injection method for spin-transfer torque magnetic random-access memory.

  • Published In: Applied Physics Letters, 2023, v. 123, n. 3. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Sun, Lin; Guo, Lei; Wang, Guocai; Su, Hua; Liu, Bo; Tang, Xiaoli 3 of 3

Abstract

This article focuses on improving the performance of spin-transfer torque magnetic random-access memory (STT-MRAM) by introducing a gradient-current pulse injection method to replace conventional constant-current pulses. Using simulations and experiments on a 70-nm CoFeB/MgO/CoFeB magnetic tunnel junction (MTJ) with perpendicular magnetic anisotropy, the study demonstrates that gradient pulses significantly reduce both the relaxation time before magnetic switching and the power consumption during switching, achieving power savings of approximately 8%–40% depending on pulse width and amplitude. The gradient-pulse method avoids the complexity of previous step-like pulses and offers a practical approach to addressing key limitations of STT-MRAM, potentially facilitating its broader commercial application.

Additional Information

  • Source:Applied Physics Letters. 2023/07, Vol. 123, Issue 3, p1
  • Document Type:Article
  • Subject Area:Computer Science
  • Publication Date:2023
  • ISSN:0003-6951
  • DOI:10.1063/5.0153972
  • Accession Number:165475664
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