Publication detailsBurn, D.M. & Atkinson, D. (2013). Suppression of Walker breakdown in magnetic domain wall propagation through structural control of spin wave emission. Applied Physics Letters 102(24): 242414.
- Publication type: Journal Article
- ISSN/ISBN: 0003-6951 (print)
- DOI: 10.1063/1.4811750
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
The control of individual magnetic domain walls has potential for future spintronic memory and data processing applications. The speed and reliability of such devices are determined by the dynamic properties of the domain walls. Typically, spin precession limitations lead to Walker breakdown, limiting wall velocity resulting in low mobility. Here, we show the suppression of Walker breakdown by the careful design of small amplitude periodic nanowire structuring to match the periodicity of domain wall spin structure transformations. This opens up a channel for energy dissipation via spin wave emission, allowing a domain wall to maintain its spin structure during propagation.