Electric spectroscopy of vortex states and dynamics in magnetic disks

Autor:	Goto, Minori, Hata, Hiroshi, Yamaguchi, Akinobu, Nakatani, Yoshinobu, Yamaoka, Takehiro, Nozaki, Yukio, Miyajima, Hideki
Rok vydání:	2011
Předmět:	Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 84, 064406 (2011)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.84.064406
Popis:	Spin-polarized radio frequency (RF) currents and RF-Oersted fields resonantly excite a magnetic vortex core confined in a micron-scale soft magnetic disk. In this study, we measured the rectifying voltage spectra caused by the anisotropic magnetoresistance oscillation due to the gyration of the vortex with different polarity and chirality. The measured spectra are presented such that we can determine the vortex properties and strength of the spin torques and Oersted field accurately and directly through analytical calculation. Comment: 39 pages,1 table, 10 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1106.4516 Zobrazit plný text záznamu View this record from Arxiv