Dresden 2011 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 44: Poster Session Correlated Electrons

TT 44.81: Poster

Donnerstag, 17. März 2011, 10:00–13:00, P1

Polarized electron currents in the helical magnet MnSi — •Pascal Krautscheid, Karin Everschor, Markus Garst, and Achim Rosch — Institut für Theoretische Physik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln

The Dzyaloshinskii-Moriya interaction in MnSi results in the formation of helical magnetic phases and even the stabilization of Skyrmion configurations at low temperatures [1]. A polarized electron current couples efficiently to such twisted magnetic structures giving rise to pronounced spin-torques transfer phenomena [2]. We study the interaction of spin currents with the magnetic texture in MnSi in the framework of the Landau-Lifshitz-Gilbert equation. Particular emphasis is put on the influence of spin currents on the pitch of the magnetic helix and its pinning by the underlying crystal structure of MnSi.
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F. Jonietz et al., Science, to be published (2010).