Theory for a dissipative droplet soliton excited by a spin torque nanocontact

Details Theory for a dissipative droplet soliton excited by a spin torque nanocontact Theory for a dissipative droplet soliton excited by a spin torque nanocontact

2010-08-11

arxiv.org/abs/1008.1898v1

Physical Review B 82, 054432 (2010)

Physics

Condensed Matter

Materials Science

15 pages, 12 figures

Scientific paper

10.1103/PhysRevB.82.054432

A novel type of solitary wave is predicted to form in spin torque oscillators when the free layer has a sufficiently large perpendicular anisotropy. In this structure, which is a dissipative version of the conservative droplet soliton originally studied in 1977 by Ivanov and Kosevich, spin torque counteracts the damping that would otherwise destroy the mode. Asymptotic methods are used to derive conditions on perpendicular anisotropy strength and applied current under which a dissipative droplet can be nucleated and sustained. Numerical methods are used to confirm the stability of the droplet against various perturbations that are likely in experiments, including tilting of the applied field, non-zero spin torque asymmetry, and non-trivial Oersted fields. Under certain conditions, the droplet experiences a drift instability in which it propagates away from the nanocontact and is then destroyed by damping.

Affiliated with

Also associated with

No associations

Rating

Theory for a dissipative droplet soliton excited by a spin torque nanocontact 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 for a dissipative droplet soliton excited by a spin torque nanocontact, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theory for a dissipative droplet soliton excited by a spin torque nanocontact will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-480076