Phys. Rev. B 101, 155423 (2020) - Domain wall motion in a diffusive weak ferromagnet

Domain wall motion in a diffusive weak ferromagnet

Faluke Aikebaier and Tero T. Heikkilä

Phys. Rev. B 101, 155423 – Published 21 April 2020

Abstract

We study the domain wall motion in a disordered weak ferromagnet, induced by injecting a spin current from a strong ferromagnet. Starting from the spin-diffusion equation describing the spin accumulation in the weak ferromagnet, we calculate the force and torque acting on the domain wall. We also study the ensuing domain wall dynamics and suggest a possible measurement method for detecting the domain wall motion via measuring the additional resistance.

Received 18 December 2019
Revised 25 February 2020
Accepted 9 March 2020

DOI:https://doi.org/10.1103/PhysRevB.101.155423

©2020 American Physical Society

Physics Subject Headings (PhySH)

Domain walls Electrical spin injection Ferromagnetism Spin accumulation Spin current Spin diffusion Spin relaxation Spin transfer torque

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Faluke Aikebaier^* and Tero T. Heikkilä ^†

Department of Physics and Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 University of Jyväskylä, Finland

^*faluke.aikebaier@jyu.fi
^†tero.t.heikkila@jyu.fi

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Issue

Vol. 101, Iss. 15 — 15 April 2020

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