Fresnel diffraction of spin waves
arXiv:1807.11754 · doi:10.1103/PhysRevB.98.144430
Abstract
The propagation of magnetostatic forward volume waves excited by a constricted coplanar waveguide is studied via inductive spectroscopy techniques. A series of devices consisting of pairs of sub-micrometer size antennae is used to perform a discrete mapping of the spin wave amplitude in the plane of a 30-nm thin YIG film. We found that the spin wave propagation remains well focused in a beam shape of width comparable to the constriction length and that the amplitude within the constriction displays oscillations, two features which are explained in terms of near-field Fresnel diffraction theory.
arXiv comment11 pages, 3 figures, oral presentation at the 2018 March Meeting (http://meetings.aps.org/Meeting/MAR18/Session/V19.1)
References in corpus (14)
- Realization of XNOR and NAND spin-wave logic gates
- Snell's Law for Spin Waves
- Spin-wave propagation in ultra-thin YIG based waveguides
- Spin-wave logic devices based on isotropic forward volume magneto-static waves
- Nonlinear emission of spin-wave caustics from an edge mode of a micro-structured Co2Mn0.6Fe0.4Si waveguide
- Pattern Recognition with Magnonic Holographic Memory Device
- Spin wave power flow and caustics in ultrathin ferromagnets with the Dzyaloshinskii-Moriya interaction
- Spin waves in micro-structured yttrium iron garnet nanometer-thick films
- Epitaxial patterning of nanometer-thick Y3Fe5O12 films with low magnetic damping
- Microwave excitation of spin wave beams in thin ferromagnetic films
- Spin wave amplification using the spin Hall effect in permalloy/platinum bilayers
- Goos-Hanchen shift of a spin-wave beam transmitted through anisotropic interface between two ferromagnets
- Insulating nanomagnets driven by spin torque
- Bias-free spin-wave phase shifter for magnonic logic
Cited by in corpus (6)
- Propagating spin-wave spectroscopy in nanometer-thick YIG films at millikelvin temperatures
- Controlled interconversion of quantized spin wave modes via local magnetic fields
- Reversible tuning of omnidirectional band gaps in two-dimensional magnonic crystals by magnetic field and in-plane squeezing
- Dispersionless propagation of ultra-short spin-wave pulses in ultrathin yttrium iron garnet waveguides
- Spin wave diffraction model for perpendicularly magnetized films
- Sub-micrometer near-field focusing of spin waves in ultrathin YIG films