Spin-wave tunnelling through a mechanical gap
Fachbereich Physik and Forschungszentrum OPTIMAS, TU Kaiserslautern - 67663 Kaiserslautern, Germany, EU
2 School of Physics, University of Western Australia - Crawley, WA 6009, Australia
Corresponding author: email@example.com
Accepted: 7 April 2010
We report on the experimental and theoretical investigation of spin-wave tunnelling through a mechanical gap in a ferromagnetic film. Samples with different gap widths were fabricated and the transmission of spin-wave pulses through the gaps was studied. Transmission through the gaps is possible due to the long-range character of the dipole-dipole interaction underlying dynamics of long-wavelength spin waves. By comparing our experimental results with the developed theoretical model, we demonstrate, that the local inhomogeneity of the static magnetisation and the internal field has a significant impact on the transmission.
PACS: 75.30.Ds – Spin waves / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)
© EPLA, 2010