To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

Merging droplets in doubl… - University of Gothenburg, Sweden Till startsida
Sitemap
To content Read more about how we use cookies on gu.se

Merging droplets in double nanocontact spin torque oscillators

Journal article
Authors D. Xiao
Y. W. Liu
Y. Zhou
S. M. Mohseni
Sunjae Chung
Johan Åkerman
Published in Physical Review B
Volume 93
Issue 9
ISSN 2469-9950
Publication year 2016
Published at Department of Physics (GU)
Language en
Links dx.doi.org/10.1103/PhysRevB.93.0944...
Keywords magnetic skyrmions, solitons, driven, dynamics
Subject categories Physical Sciences

Abstract

We demonstrate how magnetic droplet soliton pairs, nucleated by two separated nanocontact (NC) spin torque oscillators, can merge into a single droplet soliton. A detailed description of the magnetization dynamics of this merger process is obtained by micromagnetic simulations: A droplet pair with a steady-state in-phase spin precession is generated through the spin-transfer torque effect underneath two separate NCs, followed by a gradual expansion of the droplets' volume and the out-phase of magnetization on the inner side of the two droplets, resulting in the droplets merging into a larger droplet. This merger occurs only when the NC separation is smaller than a critical value. A transient breathing mode is observed before the merged droplet stabilizes into a steady precession state. The precession frequency of the merged droplet is lower than that of the droplet pair, consistent with its larger size. Merged droplets can again break up into droplet pairs at high enough magnetic field with a strong hysteretic response.

Page Manager: Webmaster|Last update: 9/11/2012
Share:

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?