Spin Wave Diffraction and Perfect Imaging of a Grating

Details Spin Wave Diffraction and Perfect Imaging of a Grating Spin Wave Diffraction and Perfect Imaging of a Grating

2011-08-30

arxiv.org/abs/1108.5883v1

Physics

Condensed Matter

Other Condensed Matter

5 pages, 3 figures

Scientific paper

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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