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Title: High efficiency of the spin-orbit torques induced domain wall motion in asymmetric interfacial multilayered Tb/Co wires

We investigated current-induced DW motion in asymmetric interfacial multilayered Tb/Co wires for various thicknesses of magnetic and Pt-capping layers. It is found that the driving mechanism for the DW motion changes from interfacial to bulk effects at much thick magnetic layer (up to 19.8 nm). In thin wires, linearly depinning field dependence of critical current density and in-plane field dependence of DW velocity suggest that the extrinsic pinning governs field-induced DW motion and injecting current can be regarded as an effective field. It is expected that the high efficiency of spin-orbit torques in thick magnetic multilayers would have important implication for future spintronic devices based on in-plane current induced-DW motion or switching.
Authors:
 [1] ;  [2] ;  [1]
  1. Toyota Technological Institute, Tempaku, Nagoya 468-8511 (Japan)
  2. (Viet Nam)
Publication Date:
OSTI Identifier:
22410114
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ASYMMETRY; COBALT; CRITICAL CURRENT; CURRENT DENSITY; DOMAIN STRUCTURE; INTERFACES; LAYERS; L-S COUPLING; MAGNETIC MATERIALS; PLATINUM; TERBIUM; TORQUE; VELOCITY; WIRES