Chiral superconductivity in a semiconducting wire induced by helical magnetic order
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918086373801984 |
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| author | Boström, Florinda Viñas Boström, Emil Viñas |
| author_facet | Boström, Florinda Viñas Boström, Emil Viñas |
| contents | Chiral superconductors are sought after for their promising but elusive Majorana zero modes. We show that a one-dimensional semiconductor in proximity to a conventional superconductor and a helical magnet can exhibit chiral superconductivity, without the need for external magnetic fields or intrinsic spin-orbit coupling. The effective proximity-induced gap and the triplet gap arising from magnon fluctuations can be made to interfere constructively. The heterostructure can be tuned into a topological regime with Majorana zero modes at its ends, over a range of chemical potentials proportional to the spin-electron coupling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_05839 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Chiral superconductivity in a semiconducting wire induced by helical magnetic order Boström, Florinda Viñas Boström, Emil Viñas Superconductivity Mesoscale and Nanoscale Physics Chiral superconductors are sought after for their promising but elusive Majorana zero modes. We show that a one-dimensional semiconductor in proximity to a conventional superconductor and a helical magnet can exhibit chiral superconductivity, without the need for external magnetic fields or intrinsic spin-orbit coupling. The effective proximity-induced gap and the triplet gap arising from magnon fluctuations can be made to interfere constructively. The heterostructure can be tuned into a topological regime with Majorana zero modes at its ends, over a range of chemical potentials proportional to the spin-electron coupling. |
| title | Chiral superconductivity in a semiconducting wire induced by helical magnetic order |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2507.05839 |