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Outcomes of collisions between different transition waves in tristable lattices

Determine the outcomes that occur when different types of transition waves collide in one-dimensional metamaterial lattices with tristable onsite potentials induced by localized external magnetic fields, and identify the resulting post-collision states.

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Background

Collisions between traveling phase boundaries (kinks and anti-kinks) can produce rich dynamics, including annihilation, nucleation, or stationary interfaces, but these phenomena had not been clarified for tristable, magnetically tunable lattices.

Because the onsite potential symmetry can be adjusted in the proposed platform, understanding collision outcomes in this setting is central to exploiting tristability for remote actuation, phase nucleation, and controlled formation of domain walls.

References

Key open questions include: (1) How many types of transition waves can such lattices support, and is there a universal law governing their characteristics? (2) How do these waves interact with finite boundaries? (3) What happens when different transition waves collide?

— Remote Nucleation and Stationary Domain Walls via Transition Waves in Tristable Magnetoelastic Lattices (2405.01168 - Ray et al., 2 May 2024) in Introduction (paragraph with “Key open questions include…”)