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Title: Chiral magnetization textures stabilized by the Dzyaloshinskii-Moriya interaction during spin-orbit torque switching

We study the effect of the Dzyaloshinskii-Moriya interaction (DMI) on current-induced magnetic switching of a perpendicularly magnetized heavy-metal/ferromagnet/oxide trilayer both experimentally and through micromagnetic simulations. We report the generation of stable helical magnetization stripes for a sufficiently large DMI strength in the switching region, giving rise to intermediate states in the magnetization and confirming the essential role of the DMI on switching processes. We compare the simulation and experimental results to a macrospin model, showing the need for a micromagnetic approach. The influence of the temperature on the switching is also discussed.
Authors:
; ;  [1] ; ; ;  [2]
  1. Departamento de FĂ­sica Aplicada, Universidad de Salamanca, Plaza de los Caidos s/n, Salamanca 37008 (Spain)
  2. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Publication Date:
OSTI Identifier:
22283076
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 9; 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; CHIRALITY; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; ELECTRIC CURRENTS; FERROMAGNETISM; HEAVY METALS; INTERFACES; INTERMEDIATE STATE; MAGNETIZATION; OXIDES; SPIN; TEMPERATURE DEPENDENCE; TEXTURE; TORQUE