Microwave Kerr/Faraday Resonance in Two-dimensional Chiral Superconductors
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866908767444008960 |
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| author | Matsushita, Taiki Ieda, Jun'ichi Araki, Yasufumi Morimoto, Takahiro Vekhter, Ilya Yanase, Youichi |
| author_facet | Matsushita, Taiki Ieda, Jun'ichi Araki, Yasufumi Morimoto, Takahiro Vekhter, Ilya Yanase, Youichi |
| contents | We investigate the polar Kerr and Faraday effects in two-dimensional multiband chiral superconductors. We show that the clapping modes--the relative phase and amplitude oscillations between two chiral components of the superconducting order parameter--lie well within the quasiparticle excitation gap in multiband systems and dominate these magneto-optical responses in the microwave regime. The Kerr and Faraday rotation angles exhibit the resonant enhancement with sign reversals in the microwave regime as a function of the light frequency, reaching peak values on the order of 100 nrad--10 $μ$rad in thin films of candidate chiral superconductors. These resonances are accessible in superconducting atomic layer materials and provide a generic probe of chiral superconductivity in two-dimensional systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_10151 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Microwave Kerr/Faraday Resonance in Two-dimensional Chiral Superconductors Matsushita, Taiki Ieda, Jun'ichi Araki, Yasufumi Morimoto, Takahiro Vekhter, Ilya Yanase, Youichi Superconductivity Materials Science Strongly Correlated Electrons We investigate the polar Kerr and Faraday effects in two-dimensional multiband chiral superconductors. We show that the clapping modes--the relative phase and amplitude oscillations between two chiral components of the superconducting order parameter--lie well within the quasiparticle excitation gap in multiband systems and dominate these magneto-optical responses in the microwave regime. The Kerr and Faraday rotation angles exhibit the resonant enhancement with sign reversals in the microwave regime as a function of the light frequency, reaching peak values on the order of 100 nrad--10 $μ$rad in thin films of candidate chiral superconductors. These resonances are accessible in superconducting atomic layer materials and provide a generic probe of chiral superconductivity in two-dimensional systems. |
| title | Microwave Kerr/Faraday Resonance in Two-dimensional Chiral Superconductors |
| topic | Superconductivity Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2601.10151 |