High wave vector non-reciprocal spin wave beams

Author:

Temdie L.1ORCID,Castel V.1ORCID,Dubs C.2ORCID,Pradhan G.3,Solano J.3ORCID,Majjad H.3,Bernard R.3ORCID,Henry Y.3ORCID,Bailleul M.3ORCID,Vlaminck V.1ORCID

Affiliation:

1. IMT- Atlantique, Dpt. MO, Technopole Brest-Iroise 1 , CS83818, 29238 Brest Cedex 03, France

2. INNOVENT e.V. Technologieentwicklung 2 , Pruessingstrasse 27B, 07745 Jena, Germany

3. IPCMS - UMR 7504 CNRS Institut de Physique et Chimie des Matériaux de Strasbourg France 3 , 67200 Strasbourg, France

Abstract

We report unidirectional transmission of micron-wide spin waves beams in a 55 nm thin YIG. We downscaled a chiral coupling technique implementing Ni80Fe20 nanowires arrays with different widths and lattice spacing to study the non-reciprocal transmission of exchange spin waves down to λ ≈ 80 nm. A full spin wave spectroscopy analysis of these high wavevector coupled-modes shows some difficulties to characterize their propagation properties, due to both the non-monotonous field dependence of the coupling efficiency, and also the inhomogeneous stray field from the nanowires.

Funder

Agence Nationale de la Recherche

CPER

Departement Finistère - Brest Metropole

Deutsche Forschungsgemeinschaft

Publisher

AIP Publishing

Subject

General Physics and Astronomy

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