Back to Search Start Over

A robust soliton ratchet using combined antiferromagnetic and ferromagnetic interlayer couplings

Authors :
Reinoud Lavrijsen
B Bert Koopmans
Russell P. Cowburn
D. Petit
Amalio Fernández-Pacheco
Hjm Henk Swagten
Rhodri Mansell
Jongmin Lee
Mansell, Rhodri [0000-0002-6026-0731]
Petit, Dorothee [0000-0003-0158-0329]
Apollo - University of Cambridge Repository
Physics of Nanostructures
Eindhoven Hendrik Casimir institute
Source :
Applied Physics Letters, 106. American Institute of Physics
Publication Year :
2015
Publisher :
AIP Publishing, 2015.

Abstract

A sharp magnetic soliton can be created and propagated in a vertical ratchet structure based on magnetic layers with out-of-plane anisotropy using a combination of antiferromagnetic and ferromagnetic interlayer couplings. This allows the use of identical magnetic layers in the stack, which simplifies the implementation of the ratchet compared to schemes which use alternating layer thicknesses. The ratchet behavior is analyzed using an Ising-macrospin approximation and conditions are derived for the propagation of a soliton, which is demonstrated experimentally. Values extracted from the experimental data for the coercivities and interlayer couplings show significant variation, which demonstrates the robustness of the soliton propagation.

Details

Language :
English
ISSN :
00036951
Database :
OpenAIRE
Journal :
Applied Physics Letters, 106. American Institute of Physics
Accession number :
edsair.doi.dedup.....8ab1972c6d852ae63907f9d76733b065