TY - JOUR
T1 - Direct observation of spin-wave focusing by a Fresnel lens
AU - Gräfe, Joachim
AU - Gruszecki, Pawel
AU - Zelent, Mateusz
AU - Decker, Martin
AU - Keskinbora, Kahraman
AU - Noske, Matthias
AU - Gawronski, Przemysław
AU - Stoll, Hermann
AU - Weigand, Markus
AU - Krawczyk, Maciej
AU - Back, Christian H.
AU - Goering, Eberhard J.
AU - Schütz, Gisela
N1 - Publisher Copyright:
© 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
PY - 2020/7/1
Y1 - 2020/7/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85092213340&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.102.024420
DO - 10.1103/PhysRevB.102.024420
M3 - Article
AN - SCOPUS:85092213340
SN - 2469-9950
VL - 102
JO - Physical Review B
JF - Physical Review B
IS - 2
M1 - 024420
ER -