Observation of spin-transfer switching in deep submicron-sized and low-resistance magnetic tunnel junctions
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- 19 April 2004
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 84 (16) , 3118-3120
- https://doi.org/10.1063/1.1707228
Abstract
The spin-transfer effect has been studied in magnetic tunnel junctions (PtMn/CoFe/Ru/CoFe/Al2O3/CoFe/NiFe) with dimensions down to 0.1×0.2 μm2 and resistance–area product RA in the range of 0.5–10 Ω μm2 (ΔR/R=1%–20%). Current-induced magnetization switching is observed with a critical current density of about 8×106 A/cm2. The attribution of the switching to the spin-transfer effect is supported by a current-induced ΔR/R value identical to the one obtained from the R versus H measurements. Furthermore, the critical switching current density has clear dependence on the applied magnetic field, consistent with what has been observed previously in the case of spin-transfer-induced switching in metallic multilayer systems.Keywords
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This publication has 15 references indexed in Scilit:
- Materials dependence of the spin-momentum transfer efficiency and critical current in ferromagnetic metal/Cu multilayersApplied Physics Letters, 2003
- Effect of antiferromagnetic interlayer coupling on current-assisted magnetization switchingApplied Physics Letters, 2003
- Quantitative Study of Magnetization Reversal by Spin-Polarized Current in Magnetic Multilayer NanopillarsPhysical Review Letters, 2002
- Anatomy of spin-transfer torquePhysical Review B, 2002
- Mechanisms of Spin-Polarized Current-Driven Magnetization SwitchingPhysical Review Letters, 2002
- Spin-polarized current induced switching in Co/Cu/Co pillarsApplied Physics Letters, 2001
- Role of spin-dependent interface scattering in generating current-induced torques in magnetic multilayersPhysical Review B, 2000
- Current-Driven Magnetization Reversal and Spin-Wave Excitations in CoCuCo PillarsPhysical Review Letters, 2000
- Emission of spin waves by a magnetic multilayer traversed by a currentPhysical Review B, 1996
- Current-driven excitation of magnetic multilayersJournal of Magnetism and Magnetic Materials, 1996