Magnetization reversal and nonexponential relaxation via instabilities of internal spin waves in nanomagnets

Details Magnetization reversal and nonexponential relaxation via instabilities of internal spin waves in nanomagnets Magnetization reversal and nonexponential relaxation via instabilities of internal spin waves in nanomagnets

2006-09-04

arxiv.org/abs/cond-mat/0609074v2

Europhys. Letters 82 (2008) 17007

Physics

Condensed Matter

Statistical Mechanics

6 EPL pages, 4 figures

Scientific paper

10.1209/0295-5075/82/17007

A magnetic particle with atomic spins ordered in an unstable direction is an example of a false vacuum that decays via excitation of internal spin waves. Coupled evolution of the particle's magnetization (or the vacuum state) and spin waves, considered in the time-dependent vacuum frame, leads to a peculiar relaxation that is very fast at the beginning but slows down to a nonexponential long tail at the end. The two main scenarios are linear and exponential spin-wave instabilities. For the former, the longitudinal and transverse relaxation rates have been obtained analytically. Numerical simulations show that the particle's magnetization strongly decreases in the middle of reversal and then recovers.

Affiliated with

Also associated with

No associations

Rating

Magnetization reversal and nonexponential relaxation via instabilities of internal spin waves in nanomagnets 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 Magnetization reversal and nonexponential relaxation via instabilities of internal spin waves in nanomagnets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetization reversal and nonexponential relaxation via instabilities of internal spin waves in nanomagnets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-554347