Magnetic domain wall dynamics in the precessional regime: influence of the Dzyaloshinskii-Moriya interaction

Abstract

The domain wall dynamics driven by an out of plane magnetic field was measured for a series of magnetic trilayers with different strengths of the interfacial Dzyaloshinskii-Moriya interaction (DMI). The features of the field-driven domain wall velocity curves strongly depend on the amplitude of the HD field stabilising chiral Néel walls. The measured Walker velocity, which in systems with large DMI is maintained after the Walker field giving rise to a velocity plateau up to the Slonczewski field HS, can be easily related to the DMI strength. Yet, when the DMI field HD and the domain wall demagnetising field HDW have comparable values, a careful analysis needs to be done in order to evaluate the impact of the DMI on the domain wall velocity. By means of a one-dimensional model and 2D simulations, we successfully extend this method to explain experimental results to cases where HD and HDW are comparable.

9 pages, 3 Figures

References in corpus (3)

• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Interfacial Dzyaloshinskii-Moriya interaction in perpendicularly-magnetized Pt/Co/AlO${}_x$ ultrathin films measured by Brillouin light spectroscopy
• Tuning domain wall velocity with Dzyaloshinskii-Moriya interaction

Cited by in corpus (6)

• Element-selective modulation of interfacial Dzyaloshinskii-Moriya interaction in Pt|Co|Metal based multilayers
• Revealing nanoscale disorder in W/CoFeB/MgO ultra-thin films using domain wall motion
• Dzyaloshinskii-Moriya interaction torques and domain wall dynamics in van der Waals heterostructures
• Tuning the dynamics of chiral domain walls of ferrimagnetic films with the magneto-ionic effect
• Interaction of in-plane magnetic skyrmions with 90${}^{\circ }$ magnetic domain walls: micromagnetic simulations
• Deterministic roughening in the dc-driven precessional regime of domain walls