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      Current-Driven Magnetization Reversal and Spin-Wave Excitations in Co\(/\)Cu\(/\)Co Pillars

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          Abstract

          Using thin film pillars approximately 100 nm in diameter, containing two Co layers of different thicknesses separated by a Cu spacer, we examine the process by which the scattering from the ferromagnetic layers of spin-polarized currents flowing perpendicular to the layers causes controlled reversal of the moment direction in the thin Co layer. The well-defined geometry permits a quantitative analysis of this spin-transfer effect, allowing tests of competing theories for the mechanism and also new insight concerning magnetic damping. When large magnetic fields are applied, the spin-polarized current no longer fully reverses the magnetic moment, but instead stimulates spin-wave excitations.

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          Most cited references10

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          Excitation of spin waves by an electric current

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            Probing Ferromagnets with Andreev Reflection

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              Erratum: Excitation of a Magnetic Multilayer by an Electric Current [Phys. Rev. Lett. 80, 4281 (1998)]

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                Author and article information

                Journal
                PRLTAO
                Physical Review Letters
                Phys. Rev. Lett.
                American Physical Society (APS)
                0031-9007
                1079-7114
                April 2000
                April 3 2000
                : 84
                : 14
                : 3149-3152
                Article
                10.1103/PhysRevLett.84.3149
                11019034
                4500409a-3cb8-461f-984f-2b48bb7d4245
                © 2000

                http://link.aps.org/licenses/aps-default-license

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