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arXiv · 2510.14216

Magnetic flux induced higher-order topological superconductivity

Jinpeng Xiao·Qianglin Hu·Zuodong Yu·Weipeng Chen·Xiaobing Luo
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Abstract

Higher-order topological superconductivity typically depends on spin-orbit interaction, and often necessitates well designed sample structures, nodal superconducting pairings or complex magnetic order. In this work, we propose a model that incorporates a Zeeman field, antiferromagnetic order, and $s$-wave superconducting pairing, all without the need for spin-orbit interaction. In a two-dimensional system, we realize a second-order topological superconductor by utilizing a staggered flux, provided that the Zeeman field is oriented perpendicular to the magnetic order moments. In three-dimensional systems, we achieve second- and third-order topological superconductors in theory, through stacking the two-dimensional second-order topological superconductor.

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Jinpeng Xiao, Qianglin Hu, Zuodong Yu, Weipeng Chen, Xiaobing Luo. 2025-10-16. Magnetic flux induced higher-order topological superconductivity. https://doi.org/10.1103/p91n-lvqv

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