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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2002
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/cond-mat/0202225 |
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- By deriving the quantum hydrodynamic equations for an isotropic single-band ferromagnet in an arbitrary magnetic field, we find that a massive mode recently predicted splits under the action of the field. The splitting is a peculiarity of charged fermions and is linear in the field to leading order in $q$ bearing resemblance to the Zeeman effect in this limit, and providing a clear signature for the experimental observation of this mode.