High wave vector non-reciprocal spin wave beams

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 lambda = 80 nm...

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Bibliographic Details
Published in:arXiv.org 2023-01
Main Authors: Temdie, L, Castel, V, Dubs, C, Pradhan, G, Solano, J, Majjad, H, Bernard, R, Henry, Y, Bailleul, M, Vlaminck, V
Format: Article
Language:English
Subjects:
Coupled modes
Coupling
Lattice vibration
Magnons
Nanowires
Wave propagation
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Summary: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 lambda = 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.
ISSN:2331-8422