Magnon-mediated topological superconductivity in a quantum wire

Florinda Viñas Boström; Emil Viñas Boström

doi:10.1103/physrevresearch.6.l022042

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arXiv · 2312.02655

Magnon-mediated topological superconductivity in a quantum wire

Florinda Viñas Boström·Emil Viñas Boström

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Abstract

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.

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Florinda Viñas Boström, Emil Viñas Boström. 2023-12-05. Magnon-mediated topological superconductivity in a quantum wire. https://doi.org/10.1103/physrevresearch.6.l022042

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