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Direct observation of spin-wave focusing by a Fresnel lens

Gräfe, Joachim ; Gruszecki, Pawel ; Zelent, Mateusz ; Decker, Martin ; Keskinbora, Kahraman ; Noske, Matthias ; Gawronski, Przemysław ; Stoll, Hermann ; Weigand, Markus ; Krawczyk, Maciej ; Back, Christian H. ; Goering, Eberhard J. ; Schütz, Gisela


Spin waves are discussed as promising information carrier for beyond complementary metal-oxide semiconductor data processing. One major challenge is guiding and steering of spin waves in a uniform film. Here, we explore the use of diffractive optics for these tasks by nanoscale real-space imaging using x-ray microscopy and careful analysis with micromagnetic simulations. We discuss the properties ...


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