Emergence of a condensate with finite-energy Cooper pairing in hybrid exciton/superconductor systems
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866911987837960192 |
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| author | Kornich, Viktoriia |
| author_facet | Kornich, Viktoriia |
| contents | We study theoretically a setup consisting of excitons formed in two valleys, with proximity-induced Cooper pairing, different in the conduction and valence bands. Due to the combination of a Coulomb interaction with superconducting proximity effects, Cooper pairing between electrons from conduction and valence bands from different valleys is formed. This finite-energy intervalley Cooper pairing has both even- and odd-frequency contributions. We show that there is a phase transition into the formation of a robust macroscopic condensate of such Cooper pairs and present characteristics of the corresponding Higgs modes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_02747 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Emergence of a condensate with finite-energy Cooper pairing in hybrid exciton/superconductor systems Kornich, Viktoriia Superconductivity Mesoscale and Nanoscale Physics We study theoretically a setup consisting of excitons formed in two valleys, with proximity-induced Cooper pairing, different in the conduction and valence bands. Due to the combination of a Coulomb interaction with superconducting proximity effects, Cooper pairing between electrons from conduction and valence bands from different valleys is formed. This finite-energy intervalley Cooper pairing has both even- and odd-frequency contributions. We show that there is a phase transition into the formation of a robust macroscopic condensate of such Cooper pairs and present characteristics of the corresponding Higgs modes. |
| title | Emergence of a condensate with finite-energy Cooper pairing in hybrid exciton/superconductor systems |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2402.02747 |