Fresnel diffraction of spin waves

Nicolás Loayza; Matthias Benjamin Jungfleisch; Axel Hoffmann; Matthieu Bailleul; Vincent Vlaminck

doi:10.1103/PhysRevB.98.144430

Fresnel diffraction of spin waves

Mesoscale and Nanoscale Physics 2018-10-31 v1

Authors: Nicolás Loayza , Matthias Benjamin Jungfleisch , Axel Hoffmann , Matthieu Bailleul , Vincent Vlaminck

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Abstract

The propagation of magnetostatic forward volume waves excited by a constricted coplanar waveguide is studied via inductive spectroscopy techniques. A series of devices consisting of pairs of sub-micrometer size antennae is used to perform a discrete mapping of the spin wave amplitude in the plane of a 30-nm thin YIG film. We found that the spin wave propagation remains well focused in a beam shape of width comparable to the constriction length and that the amplitude within the constriction displays oscillations, two features which are explained in terms of near-field Fresnel diffraction theory.

Keywords

spin waves optical propagation wave propagation

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@article{arxiv.1807.11754,
  title  = {Fresnel diffraction of spin waves},
  author = {Nicolás Loayza and Matthias Benjamin Jungfleisch and Axel Hoffmann and Matthieu Bailleul and Vincent Vlaminck},
  journal= {arXiv preprint arXiv:1807.11754},
  year   = {2018}
}

Comments

11 pages, 3 figures, oral presentation at the 2018 March Meeting (http://meetings.aps.org/Meeting/MAR18/Session/V19.1)

Fresnel diffraction of spin waves

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