Dresden 2011 – wissenschaftliches Programm

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KR: Fachgruppe Kristallographie

KR 5: Poster Multiferroics (Joint Session of MA, DF, DS, KR, TT)

KR 5.107: Poster

Dienstag, 15. März 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 — 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

The recent discovery that a propagating spin-wave moves 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. 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 [2]. 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. Rhys. Letts. 94, 112502 (2009). [2] OOMMF User's Guide, Version 1.0, M. J. Donahue and D. G. Porter, National Institute of Standard and Technology, Gaithersburg, MD, 1999, http://math.nist.gov/oommf