Numerical Study of Current-Induced Domain-Wall Dynamics: Crossover from Spin Transfer to Momentum Transfer

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dc.creatorMatsubayashi, Daisuke
dc.creatorUdagawa, Masafumi
dc.creatorOgata, Masao
dc.date2008-11-21
dc.date2009-03-10
dc.date.accessioned2026-07-07T12:50:11Z
dc.date.available2026-07-07T12:50:11Z
dc.descriptionWe study current-induced dynamics of a magnetic domain wall by solving a time-dependent Schrödinger equation combined with Landau-Lifshitz-Gilbert equation in a one-dimensional electron system coupled to localized spins. Two types of domain-wall motions are observed depending on the hard-axis anisotropy, $K_{\perp}$, of the localized spin system. For small values of $K_{\perp}$, the magnetic domain wall shows a streaming motion driven by spin transfer. In contrast, for large values of $K_{\perp}$, a stick-slip motion driven by momentum transfer is obtained. We clarify the origin of these characters of domain-wall motions in terms of the dynamics of one-particle energy levels and distribution functions.
dc.description5 pages, 6 figures, revised version
dc.identifierhttps://arxiv.org/abs/0811.3545
dc.identifierhttp://arxiv.org/abs/0811.3545
dc.identifierJ. Phys. Soc. Jpn. 78, 033703 (2009)
dc.identifierdoi:10.1143/JPSJ.78.033703
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222609
dc.subjectMesoscale and Nanoscale Physics
dc.titleNumerical Study of Current-Induced Domain-Wall Dynamics: Crossover from Spin Transfer to Momentum Transfer
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