Measuring the dispersion relations of spin wave bands using time-of-flight spectroscopy
T. Devolder,
G. Talmelli,
S. M. Ngom
et al.
Abstract:We develop a generic all-inductive procedure to measure the band structure of spin waves in a magnetic thin stripe. In contrast to existing techniques, our method works even if several spin wave branches coexist in the investigated frequency interval, provided that the branches possess sufficiently different group velocities. We first measure the microwave scattering matrix of a network composed of distant antennas inductively coupled to the spin wave bath of the magnetic film. After a mathematical transformat… Show more
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