Title :
Detection of vortex core polarities by a homodyne detection scheme
Author :
Boulle, O. ; Kim, J.-S. ; Bouzehouane, K. ; Mattheis, R. ; Faini, G. ; Klaui, Mathias
Author_Institution :
Univ. Konstanz, Konstanz, Germany
Abstract :
We show that we can detect the direction of the magnetization in a vortex core by just using electrical transport measurements. The shape of the homodyne peak when a vortex is resonantly excited by an AC current is found to be a direct measure of the out-of-plane component in the vortex core and can thus serve as a detector of a vortex core reversal.
Keywords :
ferromagnetic materials; homodyne detection; iron alloys; magnetic disc storage; magnetic structure; magnetisation; magnetoresistance; nickel alloys; ruthenium; spin polarised transport; AC current; Ni80Fe20-Ru; detector; electrical transport; homodyne detection scheme; magnetic disk; magnetization; out-of-plane component; spin polarized currents; spin structure; vortex core polarities; vortex core reversal; Current measurement; Detectors; Electric variables measurement; Magnetic cores; Magnetic resonance; Magnetization; Shape measurement;
Conference_Titel :
Electromagnetics in Advanced Applications, 2009. ICEAA '09. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-3385-8
Electronic_ISBN :
978-1-4244-3386-5
DOI :
10.1109/ICEAA.2009.5297321
