Time-resolved observation of fast domain-walls driven by vertical spin currents in short tracks

J. Sampaio, S. Lequeux, Peter Metaxas, A. Chanthbouala, R. Matsumoto, K. Yakushiji, H. Kubota, A. Fukushima, S. Yuasa, K. Nishimura, Y. Nagamine, H. Maehara, K. Tsunekawa, V. Cros, J. Grollier

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)

    Abstract

    We present time-resolved measurements of the displacement of magnetic domain-walls (DWs) driven by vertical spin-polarized currents in track-shaped magnetic tunnel junctions. In these structures, we observe very high DW velocities (600 m/s) at current densities below 107 A/cm2. We show that the efficient spin-transfer torque combined with a short propagation distance allows avoiding the Walker breakdown process and achieving deterministic, reversible, and fast (≈1 ns) DW-mediated switching of magnetic tunnel junction elements, which is of great interest for the implementation of fast DW-based spintronic devices. © 2013 AIP Publishing LLC.
    Original languageEnglish
    Pages (from-to)242415-1 - 242415-4
    JournalApplied Physics Letters
    Volume103
    Issue number24
    DOIs
    Publication statusPublished - 2013

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