Analytical methods are discussed for the study of spin-transfer-driven magnetization dynamics in nanomagnets. Particular emphasis is given to the case of uniformly magnetized systems, which is a key prerequisite before attempting any numerical computation of complex spin-transfer devices. The onset of current-induced microwave oscillations of the magnetization is analyzed in the frame of nonlinear dynamical system theory and bifurcation theory. Methods for the description of the effect of thermal fluctuations by appropriate Langevin or Fokker-Planck equations are also considered. It is shown that for systems exhibiting uniaxial symmetry the analytical treatment can be developed in considerable detail without introducing any approximation.
Keywords
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2008 Springer
About this paper
Cite this paper
Bertotti, G. (2008). Spin-Transfer-Driven Magnetization Dynamics. In: Azzerboni, B., Asti, G., Pareti, L., Ghidini, M. (eds) Magnetic Nanostructures in Modern Technology. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6338-1_2
Download citation
DOI: https://doi.org/10.1007/978-1-4020-6338-1_2
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-6336-7
Online ISBN: 978-1-4020-6338-1
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)