Anderson-Higgs amplitude mode in Josephson junctions
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914709579497472 |
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| author | Vallet, Pierre Cayssol, Jérôme |
| author_facet | Vallet, Pierre Cayssol, Jérôme |
| contents | The Anderson-Higgs mode in a superconductor corresponds to a collective and coherent oscillation of the order parameter amplitude. We propose to detect this mode in a tunnel Josephson junction between two singlet s-wave diffusive superconductors. We find a strong enhancement of the tunneling current when the junction is pumped at the equilibrium gap frequency, corresponding to the activation of the Anderson-Higgs mode. By solving the Keldysh-Usadel equations, we obtain current peaks at specific bias voltages that can serve as signatures of the Anderson-Higgs mode. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_06878 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Anderson-Higgs amplitude mode in Josephson junctions Vallet, Pierre Cayssol, Jérôme Mesoscale and Nanoscale Physics The Anderson-Higgs mode in a superconductor corresponds to a collective and coherent oscillation of the order parameter amplitude. We propose to detect this mode in a tunnel Josephson junction between two singlet s-wave diffusive superconductors. We find a strong enhancement of the tunneling current when the junction is pumped at the equilibrium gap frequency, corresponding to the activation of the Anderson-Higgs mode. By solving the Keldysh-Usadel equations, we obtain current peaks at specific bias voltages that can serve as signatures of the Anderson-Higgs mode. |
| title | Anderson-Higgs amplitude mode in Josephson junctions |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2403.06878 |