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arXiv · 0905.2172

Observation of spin-wave propagation in permalloy microstripes

Andreas Krohn·Sebastian Mansfeld·Jan Podbielski·Jesco Topp·Wolfgang Hansen·Detlef Heitmann·Stefan Mendach
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Abstract

We report on the propagation of spin waves in permalloy microstripes. By means of scanning Kerr microscopy combined with continuous microwave excitation, we detect the time evolution of spin-wave interference patterns in an external magnetic field. Assuming transverse spin-wave quantization we can directly measure the amplitude, phase velocity and damping for the corresponding transversal wave mode numbers m. We find that the spin-wave interference pattern is dominated by m=0 and m=2 with phase velocities v_0=71 km/s and v_2=47 km/s, respectively.

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Andreas Krohn, Sebastian Mansfeld, Jan Podbielski, Jesco Topp, Wolfgang Hansen, Detlef Heitmann, Stefan Mendach. 2009-05-13. Observation of spin-wave propagation in permalloy microstripes. https://arxiv.org/abs/0905.2172

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