Electron correlation effects in superconducting nanowires in and out of equilibrium
One-dimensional nanowires with strong spin–orbit coupling and proximity-induced superconductivity are predicted to exhibit topological superconductivity with condensed-matter analogues to Majorana fermions. Here, the nonequilibrium Green’s function approach with the generalized Kadanoff–Baym ansatz...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ac1898 |
| _version_ | 1797750108621635584 |
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| author | Riku Tuovinen |
| author_facet | Riku Tuovinen |
| author_sort | Riku Tuovinen |
| collection | DOAJ |
| description | One-dimensional nanowires with strong spin–orbit coupling and proximity-induced superconductivity are predicted to exhibit topological superconductivity with condensed-matter analogues to Majorana fermions. Here, the nonequilibrium Green’s function approach with the generalized Kadanoff–Baym ansatz is employed to study the electron-correlation effects and their role in the topological superconducting phase in and out of equilibrium. Electron-correlation effects are found to affect the transient signatures regarding the zero-energy Majorana states, when the superconducting nanowire is subjected to external perturbations such as magnetic-field quenching, laser-pulse excitation, and coupling to biased normal-metal leads. |
| first_indexed | 2024-03-12T16:28:53Z |
| format | Article |
| id | doaj.art-dd74f32f613b489da9070bf1b79b0e64 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:28:53Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-dd74f32f613b489da9070bf1b79b0e642023-08-08T15:37:21ZengIOP PublishingNew Journal of Physics1367-26302021-01-0123808302410.1088/1367-2630/ac1898Electron correlation effects in superconducting nanowires in and out of equilibriumRiku Tuovinen0https://orcid.org/0000-0002-7661-1807QTF Centre of Excellence, Department of Physics, University of Helsinki , P.O. Box 43, 00014, FinlandOne-dimensional nanowires with strong spin–orbit coupling and proximity-induced superconductivity are predicted to exhibit topological superconductivity with condensed-matter analogues to Majorana fermions. Here, the nonequilibrium Green’s function approach with the generalized Kadanoff–Baym ansatz is employed to study the electron-correlation effects and their role in the topological superconducting phase in and out of equilibrium. Electron-correlation effects are found to affect the transient signatures regarding the zero-energy Majorana states, when the superconducting nanowire is subjected to external perturbations such as magnetic-field quenching, laser-pulse excitation, and coupling to biased normal-metal leads.https://doi.org/10.1088/1367-2630/ac1898electron correlationtopological superconductornonequilibrium Green’s function |
| spellingShingle | Riku Tuovinen Electron correlation effects in superconducting nanowires in and out of equilibrium New Journal of Physics electron correlation topological superconductor nonequilibrium Green’s function |
| title | Electron correlation effects in superconducting nanowires in and out of equilibrium |
| title_full | Electron correlation effects in superconducting nanowires in and out of equilibrium |
| title_fullStr | Electron correlation effects in superconducting nanowires in and out of equilibrium |
| title_full_unstemmed | Electron correlation effects in superconducting nanowires in and out of equilibrium |
| title_short | Electron correlation effects in superconducting nanowires in and out of equilibrium |
| title_sort | electron correlation effects in superconducting nanowires in and out of equilibrium |
| topic | electron correlation topological superconductor nonequilibrium Green’s function |
| url | https://doi.org/10.1088/1367-2630/ac1898 |
| work_keys_str_mv | AT rikutuovinen electroncorrelationeffectsinsuperconductingnanowiresinandoutofequilibrium |