Interaction-driven Floquet engineering of topological superconductivity in Rashba nanowires
We analyze, analytically and numerically, a periodically driven Rashba nanowire proximity coupled to an s-wave superconductor using bosonization and renormalization group analysis in the regime of strong electron-electron interactions. Because of the repulsive interactions, the superconducting gap i...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-03-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.013292 |
| _version_ | 1797211514150584320 |
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| author | Manisha Thakurathi Pavel P. Aseev Daniel Loss Jelena Klinovaja |
| author_facet | Manisha Thakurathi Pavel P. Aseev Daniel Loss Jelena Klinovaja |
| author_sort | Manisha Thakurathi |
| collection | DOAJ |
| description | We analyze, analytically and numerically, a periodically driven Rashba nanowire proximity coupled to an s-wave superconductor using bosonization and renormalization group analysis in the regime of strong electron-electron interactions. Because of the repulsive interactions, the superconducting gap is suppressed, whereas the Floquet Zeeman gap is enhanced, resulting in a higher effective value of g factor compared to the noninteracting case. The flow equations for different coupling constants, velocities, and Luttinger-liquid parameters explicitly establish that even for small initial values of the Floquet Zeeman gap compared to the superconducting proximity gap, the interactions drive the system into the topological phase and the interband interaction term helps to achieve larger regions of the topological phase in parameter space. |
| first_indexed | 2024-04-24T10:27:42Z |
| format | Article |
| id | doaj.art-0e6cb05fe4e743b6ab2656086d7fbf7b |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:27:42Z |
| publishDate | 2020-03-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-0e6cb05fe4e743b6ab2656086d7fbf7b2024-04-12T16:51:12ZengAmerican Physical SocietyPhysical Review Research2643-15642020-03-012101329210.1103/PhysRevResearch.2.013292Interaction-driven Floquet engineering of topological superconductivity in Rashba nanowiresManisha ThakurathiPavel P. AseevDaniel LossJelena KlinovajaWe analyze, analytically and numerically, a periodically driven Rashba nanowire proximity coupled to an s-wave superconductor using bosonization and renormalization group analysis in the regime of strong electron-electron interactions. Because of the repulsive interactions, the superconducting gap is suppressed, whereas the Floquet Zeeman gap is enhanced, resulting in a higher effective value of g factor compared to the noninteracting case. The flow equations for different coupling constants, velocities, and Luttinger-liquid parameters explicitly establish that even for small initial values of the Floquet Zeeman gap compared to the superconducting proximity gap, the interactions drive the system into the topological phase and the interband interaction term helps to achieve larger regions of the topological phase in parameter space.http://doi.org/10.1103/PhysRevResearch.2.013292 |
| spellingShingle | Manisha Thakurathi Pavel P. Aseev Daniel Loss Jelena Klinovaja Interaction-driven Floquet engineering of topological superconductivity in Rashba nanowires Physical Review Research |
| title | Interaction-driven Floquet engineering of topological superconductivity in Rashba nanowires |
| title_full | Interaction-driven Floquet engineering of topological superconductivity in Rashba nanowires |
| title_fullStr | Interaction-driven Floquet engineering of topological superconductivity in Rashba nanowires |
| title_full_unstemmed | Interaction-driven Floquet engineering of topological superconductivity in Rashba nanowires |
| title_short | Interaction-driven Floquet engineering of topological superconductivity in Rashba nanowires |
| title_sort | interaction driven floquet engineering of topological superconductivity in rashba nanowires |
| url | http://doi.org/10.1103/PhysRevResearch.2.013292 |
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