Current-induced vortex displacement and annihilation in a single permalloy disk
- 20 July 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 74 (1), 014424
- https://doi.org/10.1103/physrevb.74.014424
Abstract
The induced motion of a magnetic vortex in a micron-sized ferromagnetic disk due to the dc current injection is studied by measuring planar Hall effect. We demonstrated that the vortex motion induced by the dc current injection has no threshold current and is proportional to the injecting current. The induced displacement deduced from the change in planar Hall resistance is quantitatively consistent with theoretical predictions. The dc current injection is also found to induce the spin torque that sweeps the vortex out of the disk at the critical current while bias magnetic fields are applied. Peak structures similar to those originated from spin wave excitations are observed in the differential planar Hall resistance curve.Keywords
This publication has 21 references indexed in Scilit:
- Current-induced magnetic vortex motion by spin-transfer torquePhysical Review B, 2006
- Current-induced resonance and mass determination of a single magnetic domain wallNature, 2004
- Domain wall motion by spin-polarized current: a micromagnetic studyJournal of Applied Physics, 2004
- Real-Space Observation of Current-Driven Domain Wall Motion in Submicron Magnetic WiresPhysical Review Letters, 2004
- Domain wall motion induced by spin polarized currents in ferromagnetic ring structuresApplied Physics Letters, 2003
- Direct Observation of Internal Spin Structure of Magnetic Vortex CoresScience, 2002
- Modification of the Landau-Lifshitz equation in the presence of a spin-polarized current in colossal- and giant-magnetoresistive materialsPhysical Review B, 1998
- Current-driven excitation of magnetic multilayersJournal of Magnetism and Magnetic Materials, 1996
- Motion of a magnetic domain wall traversed by fast-rising current pulsesJournal of Applied Physics, 1992
- Exchange interaction between ferromagnetic domain wall and electric current in very thin metallic filmsJournal of Applied Physics, 1984