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Title: Domain wall displacement by remote spin-current injection

We demonstrate numerically the ability to displace a magnetic domain wall (DW) by remote spin current injection. We consider a long and narrow magnetic nanostripe with a single DW. The spin-polarized current is injected perpendicularly to the film plane through a small nanocontact which is located at certain distance from the DW initial position. We show that the DW motion can be initiated not only by conventional spin-transfer torque but also by indirect spin-torque, created by remote spin-current injection and then transferred to the DW by the exchange-spring mechanism. An analytical description of this effect is proposed.
Authors:
; ; ;  [1] ;  [2] ; ;  [3] ;  [4]
  1. A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Vavilova 38, 119991 Moscow (Russian Federation)
  2. (Russian Federation)
  3. Unité Mixte de Physique CNRS/Thales and Université Paris-Sud, 1 Ave. A. Fresnel, 91767 Palaiseau (France)
  4. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Publication Date:
OSTI Identifier:
22299896
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 24; Other Information: (c) 2014 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; COMPUTERIZED SIMULATION; CURRENTS; DOMAIN STRUCTURE; FILMS; INJECTION; NANOSTRUCTURES; SPIN; SPIN ORIENTATION; TORQUE