Nonlinear Vortex Motion Induced by the Simultaneous Application of RF and DC Currents in a Micron-Sized Fe19Ni81 Disk

作者：Yamaguchi Akinobu^*; Motoi Keiichi; Miyajima Hideki; Sato Tomonori; Nakatani Yoshinobu

来源：IEEE Transactions on Magnetics, 2010, 46(6): 1994-1997.

DOI：10.1109/TMAG.2010.2040372

• Nonlinear
• rectifying effect
• vortex

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.

• 出版日期2010-6