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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2018

Fresnel diffraction of spin waves

Résumé

The propagation of magnetostatic forward volume waves excited by a constricted coplanar waveg-uide 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.
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Dates et versions

hal-02310412 , version 1 (10-10-2019)

Identifiants

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N. Loayza, M. B Jungfleisch, A. Hoffmann, M. Bailleul, V. Vlaminck. Fresnel diffraction of spin waves. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2018, 98 (14), pp.144430. ⟨10.1103/PhysRevB.98.144430⟩. ⟨hal-02310412⟩
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