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arXiv · 1108.5883

Spin Wave Diffraction and Perfect Imaging of a Grating

S. Mansfeld·J. Topp·K. Martens·J. N. Toedt·W. Hansen·D. Heitmann·S. Mendach
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Abstract

We study the diffraction of Damon-Eshbach-type spin waves incident on a one-dimensional grating realized by micro slits in a thin permalloy film. By means of time-resolved scanning Kerr microscopy we observe unique diffraction patterns behind the grating which exhibit replications of the spin-wave field at the slits. We show that these spin-wave images, with details finer than the wavelength of the incident Damon-Eshbach spin wavelength, arise from the strongly anisotropic spin wave dispersion.

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S. Mansfeld, J. Topp, K. Martens, J. N. Toedt, W. Hansen, D. Heitmann, S. Mendach. 2011-08-30. Spin Wave Diffraction and Perfect Imaging of a Grating. https://doi.org/10.1103/physrevlett.108.047204

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