Modification of the thermal spin-wave spectrum in a Ni81Fe19 stripe by a domain wall
arXiv:0804.0734 · doi:10.1088/0022-3727/41/16/164008
Abstract
The thermal spin-wave distribution in a Ni81Fe19 stripe with an asymmetric transverse domain wall has been investigated using Brillouin light scattering microscopy. Clear evidence has been found that the existence of the domain wall influences the spin-wave distribution of the thermal modes. The thermal spin-wave modes are quantized due to the confinement in radial direction. They vanish near the domain wall and a new mode evolves inside this complex domain wall structure. This effect is attributed to a change of the effective internal field in the domain wall region. The experimental results agree well with static and dynamic micromagnetic simulations.
arXiv comment11 pages, 5 figures
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Cited by in corpus (6)
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- Wide-range wavevector selectivity of magnon gases in Brillouin light scattering spectroscopy
- Spin wave assisted current induced magnetic domain wall motion
- Resonant translational, breathing and twisting modes of pinned transverse magnetic domain walls