Radiation of spin waves from the open end of a microscopic magnetic-film waveguide
- 27 July 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 80 (1), 014429
- https://doi.org/10.1103/physrevb.80.014429
Abstract
We have studied experimentally the radiation of spin waves from a permalloy-film microwaveguide into a continuous permalloy film. We show that due to a strong mismatch of the spin-wave spectrum caused by a variation in the demagnetizing field at the interface between the waveguide and the film, a frequency interval exists, where spin waves experience total reflection from the junction penetrating into the permalloy film in a tunnelinglike manner. At frequencies above this interval, complex frequency-dependent radiation patterns were observed characterized by a preferential radiation direction appearing due to the intrinsic anisotropy of the spin-wave dispersion characteristics in the film.Keywords
This publication has 22 references indexed in Scilit:
- Conceptual design of spin wave logic gates based on a Mach–Zehnder-type spin wave interferometer for universal logic functionsJournal of Applied Physics, 2008
- Internal spin-wave confinement in magnetic nanowires due to zig-zag shaped magnetizationPhysical Review B, 2008
- Nano-optics with spin waves at microwave frequenciesApplied Physics Letters, 2008
- Imaging small-amplitude magnetization dynamics in a longitudinally magnetized microwirePhysical Review B, 2008
- Mode interference and periodic self-focusing of spin waves in permalloy microstripesPhysical Review B, 2008
- Dipole-exchange propagating spin-wave modes in metallic ferromagnetic stripesPhysical Review B, 2007
- Spin-wave propagation and transmission along magnetic nanowires in long wavelength regimeJournal of Applied Physics, 2007
- Strong Radiation of Spin Waves by Core Reversal of a Magnetic Vortex and Their Wave Behaviors in Magnetic Nanowire WaveguidesPhysical Review Letters, 2007
- Domain-Wall Induced Phase Shifts in Spin WavesPhysical Review Letters, 2004
- Spin-wave utilization in a quantum computerPhysical Review A, 2001