Optically Inspired Nanomagnonics with Nonreciprocal Spin Waves in Synthetic Antiferromagnets

• DOI: 10.1002/adma.201906439
• Publication Date: 2020-01-16T08:03:26Z
• Authors: Edoardo Albisetti; Silvia Tacchi; Raffaele Silvani; Giuseppe Scaramuzzi; Simone Finizio; Sebastian Wintz; Christian Rinaldi; Matteo Cantoni; Jörg Raabe; Giovanni Carlotti; Riccardo Bertacco; Elisa Riedo; Daniela Petti
• Keywords: Spin wave; Magnonics; Realization (probability)

Abstract Integrated optically inspired wave‐based processing is envisioned to outperform digital architectures in specific tasks, such as image and speech recognition. In this view, spin waves represent a promising route due their nanoscale wavelength the gigahertz frequency range rich phenomenology. Here, versatile, platform using realized, demonstrating wavefront engineering, focusing, robust interference of with wavelength. particular, magnonic nanoantennas based on tailored textures are used for launching spatially shaped coherent wavefronts, diffraction‐limited spin‐wave beams, generating multi‐beam patterns, which extend several times Furthermore, it shown that intriguing features, resilience back reflection, naturally arise from nonreciprocity synthetic antiferromagnets, preserving high quality patterns spurious counterpropagating modes. This work represents fundamental step toward realization devices waves.