Reducing the frequency of the Higgs mode in a helical superconductor coupled to an LC-circuit
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866917915501002752 |
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| author | Lu, Yao Ilić, Stefan Ojajärvi, Risto Heikkilä, Tero T. Bergeret, F. Sebastian |
| author_facet | Lu, Yao Ilić, Stefan Ojajärvi, Risto Heikkilä, Tero T. Bergeret, F. Sebastian |
| contents | We show that the amplitude, or Higgs mode of a superconductor with strong spin-orbit coupling and an exchange field, couples linearly to the electromagnetic field. Furthermore, by coupling such a superconductor to an LC resonator, we demonstrate that the Higgs resonance becomes a regular mode at frequencies smaller than the quasiparticle energy threshold $2Δ$. We finally propose and discuss a possible experiment based on microwave spectroscopy for an unequivocal detection of the Higgs mode. Our approach may allow visualizing Higgs modes also in more complicated multiband superconductors with a coupling between the charge and other electronic degrees of freedom. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_11615 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Reducing the frequency of the Higgs mode in a helical superconductor coupled to an LC-circuit Lu, Yao Ilić, Stefan Ojajärvi, Risto Heikkilä, Tero T. Bergeret, F. Sebastian Superconductivity We show that the amplitude, or Higgs mode of a superconductor with strong spin-orbit coupling and an exchange field, couples linearly to the electromagnetic field. Furthermore, by coupling such a superconductor to an LC resonator, we demonstrate that the Higgs resonance becomes a regular mode at frequencies smaller than the quasiparticle energy threshold $2Δ$. We finally propose and discuss a possible experiment based on microwave spectroscopy for an unequivocal detection of the Higgs mode. Our approach may allow visualizing Higgs modes also in more complicated multiband superconductors with a coupling between the charge and other electronic degrees of freedom. |
| title | Reducing the frequency of the Higgs mode in a helical superconductor coupled to an LC-circuit |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2212.11615 |