Real-Space Observation of Current-Driven Domain Wall Motion in Submicron Magnetic Wires

2003/09/30 by Akinobu Yamaguchi, Teruo Ono, S. Nasu +6 · 15 citations
Physics and Astronomy · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevlett.92.077205

Accepted and published in PRL

openalex publication_date 2004/02/19 · arxiv created 2004/03/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report direct observation of current-driven magnetic domain wall (DW) displacement by using a well-defined single DW in a microfabricated magnetic wire with submicron width. Magnetic force microscopy visualizes that a single DW introduced in a wire is displaced back and forth by positive and negative pulsed current, respectively. The direct observation gives quantitative information on the DW displacement as a function of the intensity and the duration of the pulsed current. The result is discussed in terms of the spin-transfer mechanism.

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