dc.contributor.author | Mæland, Kristian | |
dc.contributor.author | Brekke, Bjørnulf | |
dc.contributor.author | Sudbø, Asle | |
dc.date.accessioned | 2024-04-25T08:26:55Z | |
dc.date.available | 2024-04-25T08:26:55Z | |
dc.date.created | 2024-04-24T16:17:34Z | |
dc.date.issued | 2024 | |
dc.identifier.citation | Physical review B (PRB). 2024, 109 (13), . | en_US |
dc.identifier.issn | 2469-9950 | |
dc.identifier.uri | https://hdl.handle.net/11250/3128045 | |
dc.description.abstract | Altermagnets exhibit a large electron spin splitting which can be understood as a result of strong coupling between itinerant electrons and localized spins. We consider superconductivity due to electron-magnon scattering, using strong-coupling Eliashberg theory to capture many-body effects that are not covered by a weak-coupling approach. The characteristic band structure of altermagnets puts significant constraints on the spin structure of electron scattering on the Fermi surface. We emphasize the role of spin-preserving, double-magnon scattering processes compared to conventional spin-flip processes involving a single magnon. Then, we derive the Eliashberg equations for a situation where double-magnon scattering mediates spin-polarized Cooper pairs, while both double-magnon and single-magnon scatterings contribute to many-body effects. These many-body effects impact superconducting properties in a way that differs significantly from systems where conventional spin-flip processes mediate superconductivity. To highlight the role of d -wave magnetism on superconductivity in altermagnets, we compare our results to those found in ferromagnetic half-metals and conventional antiferromagnetic metals. | en_US |
dc.description.abstract | Many-body effects on superconductivity mediated by double-magnon processes in altermagnets | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.uri | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.109.134515 | |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Many-body effects on superconductivity mediated by double-magnon processes in altermagnets | en_US |
dc.title.alternative | Many-body effects on superconductivity mediated by double-magnon processes in altermagnets | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | acceptedVersion | en_US |
dc.source.volume | 109 | en_US |
dc.source.journal | Physical review B (PRB) | en_US |
dc.source.issue | 13 | en_US |
dc.identifier.doi | 10.1103/PhysRevB.109.134515 | |
dc.identifier.cristin | 2264234 | |
dc.relation.project | Norges forskningsråd: 323766 | en_US |
dc.relation.project | Norges forskningsråd: 262633 | en_US |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |