Magnetic $2\pi$ domain walls for tunable Majorana devices

Daniel Hauck; Stefan Rex; Markus Garst

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arXiv · 2505.21779

Magnetic $2\pi$ domain walls for tunable Majorana devices

Daniel Hauck·Stefan Rex·Markus Garst

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Abstract

Identifying realistic platforms capable of controlled operations with Majorana bound states is a key challenge in the study of topological superconductivity. Among the most promising proposals are magnet-superconductor hybrid devices, which employ magnetic textures to engineer regions of non-trivial topology. Here, we consider the remarkably simple case of $2\pi$ domain walls in a magnetic ribbon placed on a superconducting substrate. We show that for properly chosen parameters, such domain walls generate topological quasi-one dimensional superconducting wires and give rise to localized Majorana bound states at the ribbon edges. Magnetic $2\pi$ domain walls are easily created and controlled with existing experimental techniques, thus providing a versatile platform for Majorana manipulations.

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Daniel Hauck, Stefan Rex, Markus Garst. 2025-05-27. Magnetic $2\pi$ domain walls for tunable Majorana devices. https://arxiv.org/abs/2505.21779

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