Brownian motion of skyrmion bubbles and its control by voltage applications

Magnetic skyrmions are expected to be promising candidates for information carriers in spintronic devices. In previous work, precise position control of skyrmions has been the main focus of attention for memory and logic applications. Here, with the aim of employing the thermally activated random wa...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2019-01, Vol.114 (1)
Main Authors: Nozaki, Takayuki, Jibiki, Yuma, Goto, Minori, Tamura, Eiiti, Nozaki, Tomohiro, Kubota, Hitoshi, Fukushima, Akio, Yuasa, Shinji, Suzuki, Yoshishige
Format: Article
Language:English
Subjects:
Applied physics
Brownian motion
Bubbles
Computation
Dynamic structural analysis
Electric potential
Hypothetical particles
Particle theory
Random walk
Random walk theory
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Magnetic skyrmions are expected to be promising candidates for information carriers in spintronic devices. In previous work, precise position control of skyrmions has been the main focus of attention for memory and logic applications. Here, with the aim of employing the thermally activated random walk of skyrmion bubbles for logical operations, i.e., token-based Brownian computing, we investigated the dynamics of skyrmion bubbles in W/FeB/Ir/MgO structures. In addition to the observation of Brownian motion of skyrmion bubbles, we demonstrated the electrical control of the diffusion constant by voltage applications. The developed technique would be useful for various kinds of skyrmion-based spintronic devices as well as Brownian computing.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5070101