6533b7dcfe1ef96bd1272cb0
RESEARCH PRODUCT
Direct observation of spin wave focusing by a Fresnel lens
Gisela SchützMaciej KrawczykChristian H. BackChristian H. BackKahraman KeskinboraMarkus WeigandMarkus WeigandJoachim GräfeEberhard GoeringM. ZelentMartin DeckerPrzemysław GawrońskiMatthias NoskePaweł GruszeckiPaweł GruszeckiHermann StollHermann Stollsubject
PhysicsDiffractionbusiness.industryFresnel lensLarge scale facilities for research with photons neutrons and ions02 engineering and technologyZone plate021001 nanoscience & nanotechnology01 natural scienceslaw.inventionCondensed Matter::Materials ScienceSemiconductorOpticslawSpin wave0103 physical sciencesMicroscopySpinplasmonicsCaustic (optics)010306 general physics0210 nano-technologybusinessdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-07-15 |