Magnon-mediated topological superconductivity in a quantum wire

Boström, F. V.; Viñas Boström, E.

doi:10.1103/PhysRevResearch.6.L022042

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Journal Article

Magnon-mediated topological superconductivity in a quantum wire

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Viñas Boström, E.
Nano-Bio Spectroscopy Group, Departamento de Física de Materiales, Universidad del País Vasco;
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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https://arxiv.org/abs/2312.02655
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https://doi.org/10.1103/PhysRevResearch.6.L022042
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PhysRevResearch.6.L022042.pdf
(Publisher version), 537KB

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Suppl_mat.pdf
(Supplementary material), 464KB

Citation

Boström, F. V., & Viñas Boström, E. (2024). Magnon-mediated topological superconductivity in a quantum wire. Physical Review Research, 6(2): L022042. doi:10.1103/PhysRevResearch.6.L022042.

Cite as: https://hdl.handle.net/21.11116/0000-000E-0D50-A

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.