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arXiv · 2012.09937

Vortex Dynamics, Pinning, and Magic Angles on Moir\'e Patterns

Wenzhao Li·C. J. O. Reichhardt·B. Jankó·C. Reichhardt
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Abstract

We examine pinning and dynamics of Abrikosov vortices interacting with pinning centers placed in a moir\'e pattern for varied moir\'e lattice angles. We find a series of magic angles at which the critical current shows a pronounced dip corresponding to lattices in which the vortices can flow along quasi-one-dimensional channels. At these magic angles, the vortices move with a finite Hall angle. Additionally, for some lattice angles there are peaks in the critical current produced when the substrate has a quasiperiodic character that strongly reduces the vortex channeling. Our results should be general to a broad class of particle-like assemblies moving on moir\'e patterns.

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Wenzhao Li, C. J. O. Reichhardt, B. Jankó, C. Reichhardt. 2020-12-17. Vortex Dynamics, Pinning, and Magic Angles on Moir\'e Patterns. https://doi.org/10.1103/physrevb.104.024504

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