Title: Anomalous low-frequency noise in synthetic antiferromagnets: Possible evidence of current-induced domain-wall motion
Authors: Herranz, D ×
Guerrero, R
Villar, R
Aliev, F. G
Swaving, A. C
Duine, R. A
Van Haesendonck, Christian
Vavra, I #
Issue Date: Apr-2009
Publisher: Published by the American Physical Society through the American Institute of Physics
Series Title: Physical Review B, Condensed Matter and Materials Physics vol:79 issue:13 pages:1-6
Article number: 134423
Abstract: We investigate current-driven magnetization dynamics in synthetic [Fe/Cr](10) multilayer antiferromagnets by using low-frequency voltage noise measurements. We observe suppression of the noise above a critical current density of about 2x10(5) A/cm(2). Theoretical estimates suggest that this effect may be attributed to current-induced motion of domain walls in the antiferromagnet. The observed critical current density is about one order of magnitude smaller than for ferromagnetic systems. Our results are relevant for applications of antiferromagnetic metal spintronics in, e.g., magnetic memory storage technology.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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