Current-induced synchronized magnetization reversal of two-body Stoner particles with dipolar interaction

Z. Z. Sun; J. Schliemann

Current-induced synchronized magnetization reversal of two-body Stoner particles with dipolar interaction

Mesoscale and Nanoscale Physics 2018-06-11 v1 Materials Science

Authors: Z. Z. Sun , J. Schliemann

Abstract

We investigate magnetization reversal of two-body uniaxial Stoner particles, by injecting spin-polarized current through a spin-valve structure. The two-body Stoner particles perform synchronized dynamics and can act as an information bit in computer technology. In the presence of magnetic dipole-dipole interaction (DDI) between the two particles, the critical switching current $I_c$ for reversing the two dipoles is analytically obtained and numerically verified in two typical geometric configurations. $I_c$ bifurcates at a critical DDI strength, where $I_c$ can be decreased to about 70% of the usual value without DDI. Moreover, we also numerically investigate the magnetic hysteresis loop, magnetization self-precession, reversal time and the synchronization stability phase diagram for the two-body system in the synchronized dynamics regime.

Keywords

magnetization reversal Stoner particles spin-polarized current dipolar interaction critical switching current synchronized dynamics spin-valve

Cite

@article{arxiv.1106.3454,
  title  = {Current-induced synchronized magnetization reversal of two-body Stoner particles with dipolar interaction},
  author = {Z. Z. Sun and J. Schliemann},
  journal= {arXiv preprint arXiv:1106.3454},
  year   = {2018}
}

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8 pages, 8 figures

Current-induced synchronized magnetization reversal of two-body Stoner particles with dipolar interaction

Abstract

Keywords

Cite

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