Observation of spin-wave propagation in permalloy microstripes

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

Observation of spin-wave propagation in permalloy microstripes

Mesoscale and Nanoscale Physics 2009-05-14 v1

Authors: 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.

Keywords

spin waves wave propagation

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@article{arxiv.0905.2172,
  title  = {Observation of spin-wave propagation in permalloy microstripes},
  author = {Andreas Krohn and Sebastian Mansfeld and Jan Podbielski and Jesco Topp and Wolfgang Hansen and Detlef Heitmann and Stefan Mendach},
  journal= {arXiv preprint arXiv:0905.2172},
  year   = {2009}
}

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3 pages, 3 figures, submitted to Applied Physics Letters

Observation of spin-wave propagation in permalloy microstripes

Abstract

Keywords

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