Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 64: Poster 1
MA 64.54: Poster
Freitag, 24. März 2017, 09:30–13:00, P2-EG
Spin pumping near the magnetic phase transition in ultrathin Fe/Pd bilayers — •Jochen Greser, Sascha Keller, Matthias R. Schweizer, Burkard Hillebrands, and Evangelos Th. Papaioannou — Fachbereich Physik, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. 56, 67663 Kaiserslautern, Germany
Spin pumping (SP) is a powerful tool to generate pure spin currents which are a key ingredient in spintronic devices. The electrical detection of a pure spin current can be accomplished by the inverse spin Hall effect (ISHE) using metals with strong spin-orbit interaction, such as Pd. In this work SP close to the ferromagnetic (FM)/paramagnetic (PM) phase transition is investigated. On the contrary to the studies so far where the phase transition has been created in samples composed of a PM layer to FM/Pt or YIG/Pt bilayers, here only one FM layer is used in order to drive the phase transition. This can be achieved by using δ-doped Fe/Pd bilayers which have the advantage of a controllable Curie temperature TC. A high ISHE voltage has been observed for extremely thin Fe layers around the phase transition.