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Phase locking of moving magnetic vortices in bridge-coupled nanodisks.
- Source :
- Journal of Applied Physics; 2015, Vol. 117 Issue 17, p173907-1-173907-7, 7p, 1 Diagram, 9 Graphs
- Publication Year :
- 2015
-
Abstract
- In this paper, phase locking dynamics of vortices induced by spin transfer torque in bridge-coupled nanodisks are studied by micromagnetic simulations. In the presence of the bridge coupling, the required time for the phase locking is dramatically reduced, and the phase difference between the two vortices keeps at a nonzero value after the phase locking. Moreover, the phase difference is affected significantly by bridge coupling, Oersted field distribution, nanodisk size, as well as inplane bias magnetic field. In addition, the coupled gyrotropic frequency of vortices depends linearly on the perpendicular magnetic field. This systematic study of phase locking parameters, especially the phase difference, is important for the applications of vortex-based spin-torque nano-oscillators. [ABSTRACT FROM AUTHOR]
- Subjects :
- SPHEROMAKS
MAGNETIC coupling
MAGNETIC materials
MAGNETIC fields
MAGNETIZATION
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 117
- Issue :
- 17
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 102606736
- Full Text :
- https://doi.org/10.1063/1.4919749