DocumentCode :
1498191
Title :
Nonlinear Vortex Motion Induced by the Simultaneous Application of RF and DC Currents in a Micron-Sized 
Disk
Author :
Yamaguchi, Akinobu ; Motoi, Keiichi ; Miyajima, Hideki ; Sato, Tomonori ; Nakatani, Yoshinobu
Author_Institution :
Dept. of Phys., Keio Univ., Yokohama, Japan
Volume :
46
Issue :
6
fYear :
2010
fDate :
6/1/2010 12:00:00 AM
Firstpage :
1994
Lastpage :
1997
Abstract :
The translational mode of a vortex confined in a soft magnetic Fe19Ni81 circular disk and an elliptically shaped dot causes an asymmetric response in the rectifying planar Hall voltage and dc voltage output spectra. The symmetry breaking of these spectra has been experimentally observed, and is controlled by the simultaneous application of radio-frequency current and direct current. We can qualitatively explain the asymmetry of the rectifying spectra by the nonlinear resonator model, with gyration within a large radius around the vortex equilibrium positions causing the asymmetry.
Keywords :
discs (structures); ferromagnetic materials; iron alloys; magnetic traps; nickel alloys; rectification; soft magnetic materials; spin dynamics; spontaneous symmetry breaking; vortices; Fe19Ni81; RF currents; dc voltage output spectra; nonlinear resonator model; nonlinear vortex motion; planar Hall voltage; radio-frequency current; rectifying spectra; simultaneous application; soft-magnetic circular disk; symmetry breaking; Electrodes; Electron traps; Magnetic confinement; Magnetic cores; Magnetic properties; Magnetic resonance imaging; Magnetization; Radio frequency; Soft magnetic materials; Voltage; Nonlinear; rectifying effect; vortex;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2010.2040372
Filename :
5467422
Link To Document :
