Direct observation of spin-wave focusing by a Fresnel lens
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 us...
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| Veröffentlicht in: | Physical review. B 2020-07, Vol.102 (2), p.1, Article 024420 |
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| container_title | Physical review. B |
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| creator | 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 |
| description | 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 of the focused caustic beams that are generated by a Fresnel-type zone plate and demonstrate control and steering of the focal spot. Thus, we present a steerable and intense nanometer-sized spin-wave source. Potentially, this could be used to selectively illuminate magnonic devices like nano-oscillators. |
| doi_str_mv | 10.1103/PhysRevB.102.024420 |
| format | Article |
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| ispartof | Physical review. B, 2020-07, Vol.102 (2), p.1, Article 024420 |
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| language | eng |
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| source | American Physical Society Journals |
| subjects | Beams (radiation) CMOS Data processing Diffractive optics Fresnel lenses Magnons Oscillators Steering X ray imagery X ray microscopy Zone plates |
| title | Direct observation of spin-wave focusing by a Fresnel lens |
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