Unidirectional tilt of domain walls in equilibrium in biaxial stripes with Dzyaloshinskii-Moriya interaction
arXiv:2001.03408 · doi:10.1088/1361-6463/ab95bd
Abstract
The orientation of a chiral magnetic domain wall in a racetrack determines its dynamical properties. In equilibrium, magnetic domain walls are expected to be oriented perpendicular to the stripe axis. We demonstrate the appearance of a unidirectional domain wall tilt in out-of-plane magnetized stripes with biaxial anisotropy and Dzyaloshinskii--Moriya interaction (DMI). The tilt is a result of the interplay between the in-plane easy-axis anisotropy and DMI. We show that the additional anisotropy and DMI prefer different domain wall structure: anisotropy links the magnetization azimuthal angle inside the domain wall with the anisotropy direction in contrast to DMI, which prefers the magnetization perpendicular to the domain wall plane. Their balance with the energy gain due to domain wall extension defines the equilibrium magnetization the domain wall tilting. We demonstrate that the Walker field and the corresponding Walker velocity of the domain wall can be enhanced in the system supporting tilted walls.
arXiv comment5 pages, 3 figures, supplementary materials
References in corpus (16)
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Current-driven dynamics of chiral ferromagnetic domain walls
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Blowing Magnetic Skyrmion Bubbles
- Spin Hall torque magnetometry of Dzyaloshinskii domain walls
- Velocity of domain-wall motion induced by electrical current in a ferromagnetic semiconductor (Ga,Mn)As
- Domain wall tilting in the presence of the Dzyaloshinskii-Moriya interaction in out-of-plane magnetized magnetic nanotracks
- The nature of domain walls in ultrathin ferromagnets revealed by scanning nanomagnetometry
- Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers
- Bridging magnonics and spin-orbitronics
- Overcoming the speed limit in skyrmion racetrack devices by suppressing the skyrmion Hall effect
- Instability of Walker Propagating Domain Wall in Magnetic Nanowires
- Domain walls within domain walls in wide ferromagnetic strips
- Theory of Dzyaloshinskii domain wall tilt in ferromagnetic nanostrips
- Asymmetric velocity and tilt angle of domain walls induced by spin-orbit torques
- Walker solution for Dzyaloshinskii domain wall in ultrathin ferromagnetic films