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MA: Fachverband Magnetismus
MA 19: Poster I (Bio- and Molecular Magnetism/ Magnetic Particles and Clusters/ Micro- and Nanostructured Magnetic Materials/ Magnetic Materials/ Multiferroics/ Magnetic Shape Memory Alloys/ Electron Theory of Magntism/ Spincaloric Transport/ Magnetic Coupling and Exchange Bias/ Magnetization Dynamics/ Micromagnetism and Computational Magnetics)
MA 19.108: Poster
Tuesday, March 15, 2011, 10:45–13:00, P2
Micromagnetic simulations of depinning process of the magnetic domain wall by propagating spin waves on a magnetic thin film — •June-Seo Kim1, Luis Lopez-Diaz2, Eduardo Martinez2, Jungbum Yoon3, Chun-Yeol You3, and Mathias Kläui1,4 — 1Fachbereich Physik, Universität Konstanz, Universitätsstr. 10, D-78457 Konstanz, Germany — 2Universidad de Salamanca, Plaza de la Merced s/n, E-37008, Salamanca, Spain — 3Department of Physics, Inha University, Incheon 402-751, Republic of Korea — 4SwissFEL, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland & Laboratory for Nanomagnetism and Spin Dynamics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
The recent discovery that a propagating spin-wave moves a domain wall has created a new possibility to manipulate magnetization [1]. First we calculate the domain wall motion by propagating spin waves (SWs) on a magnetic nanowire by using the objected oriented micromagnetic framework (OOMMF) code. We calculate the depinning fields of the trapped head-to-head transverse walls due to notch by propagating SWs and applied fields along the nanowire. The depinning fields depend on the frequency and amplitude of SWs. To understand the optimization frequencies to depin the DWs, we calculate the dispersion relation by using Fast Fourier Transformation (FFT) method. This work is supported by the EU-RTNs SPINSWITCH (MRTN-CT-2006-035327). [1] Dong-Soo Han et al., Appl. Phys. Letts. 94, 112502 (2009).