Theory of Magnetodynamics Induced by Spin Torque in Perpendicularly Magnetized Thin Films

Details Theory of Magnetodynamics Induced by Spin Torque in Perpendicularly Magnetized Thin Films Theory of Magnetodynamics Induced by Spin Torque in Perpendicularly Magnetized Thin Films

2005-09-10

arxiv.org/abs/cond-mat/0509265v1

Phys Rev Lett 95, 267206 (2005)

Physics

Condensed Matter

Other Condensed Matter

5 pages, 4 figures, submitted to PRL

Scientific paper

10.1103/PhysRevLett.95.267206

A nonlinear model of spin wave excitation using a point contact in a thin ferromagnetic film is introduced. Large-amplitude magnetic solitary waves are computed, which help explain recent spin-torque experiments. Numerical simulations of the fully nonlinear model predict excitation frequencies in excess of 0.2 THz for contact diameters smaller than 6 nm. Simulations also predict a saturation and red shift of the frequency at currents large enough to invert the magnetization under the point contact. The theory is approximated by a cubic complex Ginzburg-Landau type equation. The mode's nonlinear frequency shift is found by use of perturbation techniques, whose results agree with those of direct numerical simulations.

Affiliated with

Also associated with

No associations

Rating

Theory of Magnetodynamics Induced by Spin Torque in Perpendicularly Magnetized Thin Films does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Theory of Magnetodynamics Induced by Spin Torque in Perpendicularly Magnetized Thin Films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theory of Magnetodynamics Induced by Spin Torque in Perpendicularly Magnetized Thin Films will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-395453