Electric spectroscopy of vortex states and dynamics in magnetic disks
arXiv:1106.4516 · doi:10.1103/PhysRevB.84.064406
Abstract
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.
arXiv comment39 pages,1 table, 10 figures
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Cited by in corpus (5)
- Electrical Detection of Magnetization Dynamics via Spin Rectification Effects
- Qubits based on merons in magnetic nanodisks
- Electrical measurement of magnetic-field-impeded polarity switching of a ferromagnetic vortex core
- Associative memory by virtual oscillator network based on single spin-torque oscillator
- Chirality-mediated bistability and strong frequency downshifting of the gyrotropic resonance of a dynamically de-stiffened magnetic vortex