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      Switching a spin-valve back and forth by current-induced domain wall motion

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          Abstract

          We have studied the current-induced displacement of a domain wall (DW) in the permalloy (Py) layer of a Co/Cu/Py spin valve structure at zero and very small applied field. The displacement is in opposite direction for opposite dc currents, and the current density required to move DW is only of the order of 10^6 A/cm^2. For H = 3 Oe, a back and forth DW motion between two stable positions is observed. We also discuss the effect of an applied field on the DW motion.

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          Author and article information

          Journal
          14 April 2003
          Article
          10.1063/1.1594841
          cond-mat/0304312
          Custom metadata
          4 pages, 3 figures
          cond-mat.mtrl-sci

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