Regensburg 2010 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 33: Poster II
MA 33.35: Poster
Freitag, 26. März 2010, 11:00–14:00, Poster B1
Micromagnetic simulations of depinning process of a head-to-head transverse domain wall by propagating spin waves on a magnetic nanowire — •June-Seo Kim1, Luis Lopez-Diaz2, Eduardo Martinez2, and Mathias Kläui1 — 1Fachbereich Physik, Universität Konstanz, Universitätsstr. 10, D-78457 Konstanz, Germany — 2Universidad de Salamanca, Plaza de la Merced s/n, E-37008, Salamanca, Spain
The recent discovery that a propagating spin-wave moves a domain wall has created a new possibility to manipulate magnetization [1]. This is now the subject of extensive research motivated not only by its fundamental interest but also by promising applications for novel spintronic devices. In this work, we investigate the domain wall motion induced by propagating spin waves (SWs) on a magnetic nanowire by using the objected oriented micromagnetic framework (OOMMF) code [2]. We observe that domain wall velocity gradually decreases due to the SW attenuation as it moves further from the spin wave source. We also study the depinning of the wall due to the combined effect of longitudinal applied field and propagating SWs. The depinning field depends on the frequency and amplitude of SWs. A correlation between SW frequency and the resonance frequency of local mode inside the domain wall is found. This work is supported by the EU-RTNs SPINSWITCH (MRTN-CT-2006-035327). [1] Dong-Soo Han et al., Appl. Phys. Lett. 94, 112502 (2009). [2] See http://math.nist.gov/oommf