Spin motive forces due to magnetic vortices and domain walls

M.E. Lucassen, G.C.F.L. Kruis, R. Lavrijsen, H.J.M. Swagten, B. Koopmans, R.A. Duine

Research output: Contribution to journalArticleAcademicpeer-review

13 Citations (Scopus)
133 Downloads (Pure)

Abstract

We study spin motive forces, that is, spin-dependent forces and voltages induced by time-dependent magnetization textures, for moving magnetic vortices and domain walls. First, we consider the voltage generated by a one-dimensional field-driven domain wall. Next, we perform detailed calculations on field-driven vortex domain walls. We find that the results for the voltage as a function of magnetic field differ between the one-dimensional and vortex domain walls. For the experimentally relevant case of a vortex domain wall, the dependence of voltage on the field around Walker breakdown depends qualitatively on the ratio of the so-called ß parameter to the Gilbert damping constant and thus provides a way to determine this ratio experimentally. We also consider vortices on a magnetic disk in the presence of an ac magnetic field. In this case, the phase difference between field and voltage on the edge is determined by the ß parameter, providing another experimental method to determine this quantity.
Original languageEnglish
Article number014414
Pages (from-to)1-7
JournalPhysical Review B
Volume84
DOIs
Publication statusPublished - 2011

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