dc.contributor.author | Ghanbari Birgani, Atousa | |
dc.contributor.author | Risinggård, Vetle Kjær | |
dc.contributor.author | Linder, Jacob | |
dc.date.accessioned | 2022-03-04T08:58:41Z | |
dc.date.available | 2022-03-04T08:58:41Z | |
dc.date.created | 2021-08-06T13:23:29Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Scientific Reports. 2021, 11 . | en_US |
dc.identifier.issn | 2045-2322 | |
dc.identifier.uri | https://hdl.handle.net/11250/2983004 | |
dc.description.abstract | We theoretically determine the magnetic exchange interaction between two ferromagnets coupled by a superconductor using a tight-binding lattice model. The main purpose of this study is to determine how the self-consistently determined superconducting state influences the exchange interaction and the preferred ground-state of the system, including the role of impurity scattering. We find that the superconducting state eliminates RKKY-like oscillations for a sufficiently large superconducting gap, making the anti-parallel orientation the ground state of the system. Interestingly, the superconducting gap is larger in the parallel configuration than in the anti-parallel configuration, giving a larger superconducting condensation energy, even when the preferred ground state is anti-parallel. We also show that increasing the impurity concentration in the superconductor causes the exchange interaction to decrease, likely due to an increasing localization of the mediating quasiparticles in the superconductor. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Nature | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Self-consistent solution for the magnetic exchange interaction mediated by a superconductor | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 13 | en_US |
dc.source.volume | 11 | en_US |
dc.source.journal | Scientific Reports | en_US |
dc.identifier.doi | 10.1038/s41598-021-83620-3 | |
dc.identifier.cristin | 1924385 | |
dc.relation.project | Norges forskningsråd: 262633 | en_US |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |