A Correlated Route to Antiferromagnetic Spintronics
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866917354549542912 |
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| author | Bobadilla, Joel Camjayi, Alberto |
| author_facet | Bobadilla, Joel Camjayi, Alberto |
| contents | Antiferromagnets offer an attractive platform for spintronics due to their absence of net magnetization and ultrafast spin dynamics, yet their intrinsically spin-compensated electronic structure has traditionally limited their active role in spin transport. Here we identify a minimal, correlation-driven route to spin-polarized charge transport in collinear antiferromagnets. Using the doped antiferromagnetic Hubbard model within dynamical mean-field theory, we show that electronic correlations generate strong spin-dependent scattering upon doping away from half filling, while a uniform magnetic field lifts the residual symmetries that enforce spin-degenerate transport. Only the combined breaking of particle--hole symmetry by doping and of the antiferromagnetic sublattice equivalence by the applied magnetic field converts these dynamical asymmetries into a finite spin polarization of the charge current. Our results establish electronic correlations as an active ingredient for antiferromagnetic spintronics and reveal a correlated analogue of the symmetry-breaking mechanism underlying altermagnetic spin-polarized transport in structurally conventional, collinear antiferromagnets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_16552 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A Correlated Route to Antiferromagnetic Spintronics Bobadilla, Joel Camjayi, Alberto Strongly Correlated Electrons Antiferromagnets offer an attractive platform for spintronics due to their absence of net magnetization and ultrafast spin dynamics, yet their intrinsically spin-compensated electronic structure has traditionally limited their active role in spin transport. Here we identify a minimal, correlation-driven route to spin-polarized charge transport in collinear antiferromagnets. Using the doped antiferromagnetic Hubbard model within dynamical mean-field theory, we show that electronic correlations generate strong spin-dependent scattering upon doping away from half filling, while a uniform magnetic field lifts the residual symmetries that enforce spin-degenerate transport. Only the combined breaking of particle--hole symmetry by doping and of the antiferromagnetic sublattice equivalence by the applied magnetic field converts these dynamical asymmetries into a finite spin polarization of the charge current. Our results establish electronic correlations as an active ingredient for antiferromagnetic spintronics and reveal a correlated analogue of the symmetry-breaking mechanism underlying altermagnetic spin-polarized transport in structurally conventional, collinear antiferromagnets. |
| title | A Correlated Route to Antiferromagnetic Spintronics |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2603.16552 |