Phonon-mediated spin-polarized superconductivity in altermagnets
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866912600481071104 |
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| author | Leraand, Kristoffer Mæland, Kristian Sudbø, Asle |
| author_facet | Leraand, Kristoffer Mæland, Kristian Sudbø, Asle |
| contents | We consider the possibility of phonon-mediated unconventional superconductivity in a recently discovered new class of antiferromagnets, dubbed altermagnets. Within a weak-coupling approach, and using a minimal Lieb lattice model for altermagnets, we find a dominant superconducting instability odd in momentum and even in spin with spin-polarized Cooper pairs. We discuss the origin of this unusual result in terms of the spin-structure of the altermagnetic Fermi surface, in combination with the momentum-space structure of the effective phonon-mediated electron-electron interactions on the Fermi surface. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_08704 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Phonon-mediated spin-polarized superconductivity in altermagnets Leraand, Kristoffer Mæland, Kristian Sudbø, Asle Superconductivity We consider the possibility of phonon-mediated unconventional superconductivity in a recently discovered new class of antiferromagnets, dubbed altermagnets. Within a weak-coupling approach, and using a minimal Lieb lattice model for altermagnets, we find a dominant superconducting instability odd in momentum and even in spin with spin-polarized Cooper pairs. We discuss the origin of this unusual result in terms of the spin-structure of the altermagnetic Fermi surface, in combination with the momentum-space structure of the effective phonon-mediated electron-electron interactions on the Fermi surface. |
| title | Phonon-mediated spin-polarized superconductivity in altermagnets |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2502.08704 |