Collective excitations and divergent spin currents in non-centrosymmetric superconductors
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911247934423040 |
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| author | Lysne, Markus Werner, Philipp Bittner, Nikolaj |
| author_facet | Lysne, Markus Werner, Philipp Bittner, Nikolaj |
| contents | We study the collective modes in a non-centrosymmetric superconductor with Rashba spin-orbit coupling under laser irradiation. The concept of Anderson Pseudospin Resonance allows to reveal how laser driving gives rise not only to the established resonant enhancement of the third harmonic response, but also to a resonant enhancement in the second harmonic response of the spin current. We propose a theory which explains the phenomenon without including interband transitions. The theory is corroborated by numerical simulations which incorporate interband effects and allow us to clarify the signatures of the collective modes in the long-time dynamics of the superconductor. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_02032 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Collective excitations and divergent spin currents in non-centrosymmetric superconductors Lysne, Markus Werner, Philipp Bittner, Nikolaj Superconductivity Strongly Correlated Electrons We study the collective modes in a non-centrosymmetric superconductor with Rashba spin-orbit coupling under laser irradiation. The concept of Anderson Pseudospin Resonance allows to reveal how laser driving gives rise not only to the established resonant enhancement of the third harmonic response, but also to a resonant enhancement in the second harmonic response of the spin current. We propose a theory which explains the phenomenon without including interband transitions. The theory is corroborated by numerical simulations which incorporate interband effects and allow us to clarify the signatures of the collective modes in the long-time dynamics of the superconductor. |
| title | Collective excitations and divergent spin currents in non-centrosymmetric superconductors |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2511.02032 |