Dynamic binding of driven interfaces in coupled ultrathin ferromagnetic layers

Abstract

We demonstrate experimentally dynamic interface binding in a system consisting of two coupled ferromagnetic layers. While domain walls in each layer have different velocity-field responses, for two broad ranges of the driving field, H, walls in the two layers are bound and move at a common velocity. The bound states have their own velocity-field response and arise when the isolated wall velocities in each layer are close, a condition which always occurs as H->0. Several features of the bound states are reproduced using a one dimensional model, illustrating their general nature.

5 pages, 4 figures, to be published in Physical Review Letters

References in corpus (1)

• Creep and flow regimes of magnetic domain wall motion in ultrathin Pt/Co/Pt films with perpendicular anisotropy

Cited by in corpus (4)

• Thermal rounding exponent of the depinning transition of an elastic string in a random medium
• Thermal rounding of the depinning transition in ultrathin Pt/Co/Pt films
• Model of bound interface dynamics for coupled magnetic domain walls
• Diffusion between evolving interfaces