Many emergent phases of matter stem from the intertwined dynamics of quasiparticles. Here we show that a topological superconducting phase emerges as the result of interactions between electrons and magnons in a quantum wire and a helical magnet. The magnon-mediated interaction favors triplet superconductivity over a large magnetic phase space region, and stabilizes topological superconductivity over an extended region of chemical potentials. The superconducting gap depends exponentially on the spin-electron coupling, allowing it to be enhanced through material engineering techniques.

• Received 5 December 2023
• Revised 28 March 2024
• Accepted 2 May 2024

DOI:https://doi.org/10.1103/PhysRevResearch.6.L022042

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Published by the American Physical Society