Current- and field-driven magnetic antivortices for nonvolatile data storage

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Autor/in:
Erscheinungsjahr:
2009
Medientyp:
Text
Schlagworte:
  • Vortex flow
  • Magnetism
  • Magnetic vortex
  • Magnetic Anisotropy
  • Magnetization
  • Vortex flow
  • Magnetism
  • Magnetic vortex
  • Magnetic Anisotropy
  • Magnetization
  • random-access storage
  • spin polarised transport
  • micromagnetics
  • magnetic cores
  • magnetisation
  • magnetic switching
  • magnetic storage
  • vortices
  • magnetic core stores
Beschreibung:
  • We demonstrate by micromagnetic simulations that magnetic antivortices are potential candidates for fast nonvolatile data-storage elements. These storage elements are excited simultaneously by alternating spin-polarized currents and their accompanying Oersted fields. Depending on the antivortex-core polarization p and the orientation of the in-plane magnetization c around the core, the superposition of current and field leads to either a suppression of gyration (logical "zero") or an increased gyration amplitude (logical "one"). Above an excitation threshold the gyration culminates in the switching of the antivortex core. The switching can be seen as a cp -dependent writing of binary data, allowing to bring the antivortex into a distinct state. Furthermore a read-out scheme using an inductive loop situated on top of the element is investigated. © 2009 American Institute of Physics.
Lizenz:
  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
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Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/7f40ad8f-9aad-4ee1-b3b7-4ca74f3ef5ee