![](/images/graphics-bg.png)
Static Properties and Current-Driven Dynamics of Domain Walls in Perpendicular Magnetocrystalline Anisotropy Nanostrips with Rectangular Cross-Section
Author
Source
Advances in Condensed Matter Physics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-21, 21 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-15
Country of Publication
Egypt
No. of Pages
21
Main Subjects
Abstract EN
The current-induced domain wall motion along thin ferromagnetic strips with high perpendicular magnetocrystalline anisotropy is studied by means of full micromagnetic simulations and the extended one-dimensional model, taking into account thermal effects and edge roughness.
A slow creep regime, where the motion is controlled by wall pinning and thermal activation, and a flow regime with linear variation of the DW velocity, are observed.
In asymmetric stacks, where the Rashba spin-orbit field stabilizes the domain wall against turbulent transformations, the steady linear regime is extended to higher currents, leading to higher velocities than in single-layer or symmetric stacks.
The pinning and depinning at and from a local constriction were also studied.
The results indicate that engineering pinning sites in these strips provide an efficient pathway to achieve both high stability against thermal fluctuations and low-current depinning avoiding Joule heating.
Finally, the current-driven dynamics of a pinned domain wall is examined, and both the direct and the alternating contributions to the induced voltage signal induced are characterized.
It was confirmed that the direct contribution to the voltage signal can be linearly enhanced with the number of pinned walls, an observation which could be useful to develop domain-wall-based nano-oscillators.
American Psychological Association (APA)
Vecino, Eduardo Martinez. 2012. Static Properties and Current-Driven Dynamics of Domain Walls in Perpendicular Magnetocrystalline Anisotropy Nanostrips with Rectangular Cross-Section. Advances in Condensed Matter Physics،Vol. 2012, no. 2012, pp.1-21.
https://search.emarefa.net/detail/BIM-511135
Modern Language Association (MLA)
Vecino, Eduardo Martinez. Static Properties and Current-Driven Dynamics of Domain Walls in Perpendicular Magnetocrystalline Anisotropy Nanostrips with Rectangular Cross-Section. Advances in Condensed Matter Physics No. 2012 (2012), pp.1-21.
https://search.emarefa.net/detail/BIM-511135
American Medical Association (AMA)
Vecino, Eduardo Martinez. Static Properties and Current-Driven Dynamics of Domain Walls in Perpendicular Magnetocrystalline Anisotropy Nanostrips with Rectangular Cross-Section. Advances in Condensed Matter Physics. 2012. Vol. 2012, no. 2012, pp.1-21.
https://search.emarefa.net/detail/BIM-511135
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-511135