Current-Induced Magnetization Reversal in High Magnetic Fields in Co/Cu/Co Nanopillars
arXiv:cond-mat/0301324 · doi:10.1103/PhysRevLett.91.067203
Abstract
Current-induced magnetization dynamics in Co/Cu/Co trilayer nanopillars (~100nm in diameter) has been studied experimentally for large applied fields perpendicular to the layers. An abrupt and hysteretic increase in dynamic resistance is observed at high current densities for one polarity of the current, comparable to the giant magnetoresistance effect observed at low fields. A micromagnetic model, that includes a spin-transfer torque, suggests that the current induces a complete reversal of the thin Co layer to alignment antiparallel to the applied field-that is, to a state of maximum magnetic energy.
11 pages, 3 figures, (submitted to Phys. Rev. Lett.), added missing figure caption of fig. 3, updated to published version
References in corpus (7)
- Current-driven Magnetization Reversal and Spin Wave Excitations in Co/Cu/Co Pillars
- The Role of Spin-Dependent Interface Scattering in Generating Current-Induced Torques in Magnetic Multilayers
- Field dependence of magnetization reversal by spin transfer
- A self-consistent treatment of non-equilibrium spin torques in magnetic multilayers
- Non-collinear spin transfer in Co/Cu/Co multilayers
- Current-induced spin-wave excitations in a single ferromagnetic layer
- Universal angular magnetoresistance and spin torque in ferromagnetic/normal metal hybrids
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- Time-Domain Studies of Very-Large-Angle Magnetization Dynamics Excited by Spin Transfer Torques
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- Subnanosecond switching of local spin-exchange coupled to ferromagnets
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- 3-dimensional distribution of spin-polarized current: application to (Cu/Co) pillar structures
- Magnetoelectronic Spin Echo
- Effect of temperature on spin-transfer torque induced magnetic solitons
- Electronic transport in ferromagnetic conductors with inhomogeneous magnetic order parameter -- domain-wall resistance
- Current-driven excitations in magnetic multilayers: a brief review
- Magnetization reversal driven by spin-injection : a mesoscopic spin-transfer effect
- Inverted current-driven switching in Fe(Cr)/Cr/Fe(Cr) nanopillars
- Current-Driven Switching in Magnetic Multilayer Nanopillars
- Chaotic Spin Dynamics of a Long Nanomagnet Driven by a Current
- General Form of Magnetization Damping: Magnetization dynamics of a spin system evolving nonadiabatically and out of equilibrium
- Swing switching of spin-torque valves
- Current-induced magnetization dynamics in single and double layer magnetic nanopillars grown by molecular beam epitaxy