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Domain Wall Creation in Nanostructures Driven by a Spin-Polarized Current

Abstract : We report on current-driven magnetization reversal in nanopillars with elements having perpendicular magnetic anisotropy. Whereas only the two uniform magnetization states are available under the action of a magnetic field, we observed current-induced Bloch domain walls in pillars as small as 50 100 nm 2. This domain wall state can be further controlled by current to restore the uniform states. The ability to nucleate and manipulate domain walls by a current gives insight into the reversal mechanisms of small nanoelements and provides new prospects for ultrahigh density spintronic devices.
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PhysRevLett.96.186604 Raveloso...
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D. Ravelosona, S. Mangin, y. Lemaho, J. A. Katine, B. D. Terris, et al.. Domain Wall Creation in Nanostructures Driven by a Spin-Polarized Current. Physical Review Letters, American Physical Society, 2006, 96 (18), pp.186604. ⟨10.1103/PhysRevLett.96.186604⟩. ⟨hal-02086094⟩



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