Chiral Coupling to Magnetodipolar Radiation
Tao Yu (Max Planck Institute for the Structure and Dynamics of Matter, Hamburg)
Gerrit E.W. Bauer (TU Delft - QN/Bauer Group, Tohoku University, Kavli institute of nanoscience Delft)
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Abstract
We review and extend the theory of chiral pumping of spin waves by magnetodipolar stray fields that generate unidirectional spin currents and asymmetric magnon densities. We illustrate the physical principles by two kinds of chiral excitations of magnetic films, i.e., by the evanescent Oersted field of a narrow metallic stripline with an AC current bias and a magnetic nanowire under ferromagnetic resonance.
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