Article Dans Une Revue Physical Review Letters Année : 2005

Nanometer Scale Observation of High Efficiency Thermally Assisted Current-Driven Domain Wall Depinning

Résumé

Nanometer scale observation of the depinning of a narrow domain wall (DW) under a spin current is reported. We studied 12 nm wide 1D Bloch DWs created in thin films exhibiting perpendicular magnetic anisotropy. Magnetotransport measurements reveal thermally assisted current-driven DW motion between pinning sites separated by as little as 20 nm. The efficiency of current-driven DW motion assisted by thermal fluctuations is measured to be orders of magnitude higher than has been found for in-plane magnetized films, allowing us to control DW motion on a nanometer scale at low current densities.

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hal-02949265 , version 1 (25-09-2020)

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D Ravelosona, D Lacour, J A Katine, B D Terris, C Chappert. Nanometer Scale Observation of High Efficiency Thermally Assisted Current-Driven Domain Wall Depinning. Physical Review Letters, 2005, 95, pp.117203. ⟨10.1103/PhysRevLett.95.117203⟩. ⟨hal-02949265⟩
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