Orbital Zeeman effect: Signature of a massive spin wave mode in ferromagnetism

Details Orbital Zeeman effect: Signature of a massive spin wave mode in ferromagnetism Orbital Zeeman effect: Signature of a massive spin wave mode in ferromagnetism

2002-02-14

arxiv.org/abs/cond-mat/0202225v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

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.

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