Numerical computation of spin-transfer torques for antiferromagnetic domain walls

Hyeon Jong Park, Yunboo Jeong, Se Hyeok Oh, Gyungchoon Go, Jung Hyun Oh, Kyoung Whan Kim, Hyun Woo Lee, Kyung Jin Lee

Research output: Contribution to journalArticle

Abstract

We numerically compute current-induced spin-transfer torques for antiferromagnetic domain walls, based on a linear response theory in a tight-binding model. We find that, unlike for ferromagnetic domain-wall motion, the contribution of adiabatic spin torque to antiferromagnetic domain-wall motion is negligible, consistent with previous theories. As a result, the nonadiabatic spin-transfer torque is a main driving torque for antiferromagnetic domain-wall motion. Moreover, the nonadiabatic spin-transfer torque for narrower antiferromagnetic domain walls increases more rapidly than that for ferromagnetic domain walls, which is attributed to the enhanced spin mistracking process for antiferromagnetic domain walls.

Original languageEnglish
Article number144431
JournalPhysical Review B
Volume101
Issue number14
DOIs
Publication statusPublished - 2020 Apr 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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  • Cite this

    Park, H. J., Jeong, Y., Oh, S. H., Go, G., Oh, J. H., Kim, K. W., Lee, H. W., & Lee, K. J. (2020). Numerical computation of spin-transfer torques for antiferromagnetic domain walls. Physical Review B, 101(14), [144431]. https://doi.org/10.1103/PhysRevB.101.144431