Combing the helical phase of chiral magnets with electric currents

Abstract

The competition between the ferromagnetic exchange interaction and anti-symmetric Dzyaloshinskii-Moriya interaction can stabilize a helical phase or support the formation of skyrmions. In thin films of chiral magnets, the current density can be large enough to unpin the helical phase and reveal its nontrivial dynamics. We theoretically study the dynamics of the helical phase under spin-transfer torques that reveal distinct orientation processes, driven by topological defects in the bulk or induced by edges, limited by instabilities at higher currents. Our experiments confirm the possibility of on-demand switching the helical orientation by current pulses. This helical orientation might serve as a novel order parameter in future spintronics applications.

arXiv comment6 pages, 5 figures

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Cited by in corpus (12)

• Minimal Models and Transport Properties of Unconventional $p$-Wave Magnets
• Majorana modes in emergent-wire phases of helical and cycloidal magnet-superconductor hybrids
• Deterministic generation of skyrmions and antiskyrmions by electric current
• Helitronics for classical and unconventional computing
• Detection of Topological Spin Textures via Non-Linear Magnetic Responses
• Current-induced H-shaped-skyrmion creation and their dynamics in the helical phase
• Controllable highly oriented skyrmion track array in Fe3GaTe2
• Theory of charge and spin pumping in atomic-scale spiral magnets
• Response of the chiral soliton lattice to spin polarized currents
• Topological Defect Mediated Helical Phase Reorientation by Uniaxial Stress
• Sliding Dynamics of Current-Driven Skyrmion Crystal and Helix in Chiral Magnets
• The continuum of metastable conical states of monoaxial chiral helimagnets