Magnetic Nanostructures

Volume 246 of the series Springer Tracts in Modern Physics pp 1-35


The Influence of Magnetic Anisotropy on Current-Induced Spindynamics

  • Jürgen LindnerAffiliated withFaculty of Physics and Center for Nanointegration (CeNIDE), University of Duisburg-Essen Email author 
  • , Daniel E. BürglerAffiliated withPeter Grünberg Institute, Electronic Properties (PGI-6) and Jülich Aachen Research Alliance, Fundamentals of Future Information Technology (JARA-FIT), Forschungszentrum Jülich GmbH
  • , Stéphane ManginAffiliated withInstitut Jean Lamour Boulevard des Aiguillettes, Nancy-Université, CNRS

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The chapter provides a short and intuitive introduction to the basic concept of spin-transfer torque and the field of spin-torque driven magnetization dynamics in nanopillar systems. The influence of spin-polarized currents on magnetic nano-objects may lead to current-induced magnetization reversal as well as current-driven magnetization dynamics. The quantities that determine the critical currents for magnetization switching and the influence of the relative orientation of magnetization and current polarization are discussed. We focus on the nanopillar geometry and address the influence of magnetic anisotropy on the spin-torque driven spindynamics. Selected experimental examples are given to illustrate the interplay between magnetic anisotropy and spin-transfer torque.