Field-Free Synthetic-Ferromagnet Spin Torque Oscillator

F. C. Zhang; Gerrit E. W. Bauer; Jiang Xiao; Yan Zhou

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Field-Free Synthetic-Ferromagnet Spin Torque Oscillator

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arxiv 1301.4294 v1 pith:5TUY4DTH submitted 2013-01-18 cond-mat.mes-hall

Yan Zhou , Jiang Xiao , Gerrit E. W. Bauer , F. C. Zhang This is my paper · ORCID

classification cond-mat.mes-hall

keywords coupledcurrentspinstatesanalyticalanalyticallyappliedcomposite

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We study the magnetization dynamics of spin valve structures with a free composite synthetic ferromagnet (SyF) that consists of two ferromagnetic layers coupled through a normal metal spacer. A ferromagnetically coupled SyF can be excited into dynamical precessional states by an applied current without external magnetic fields. We analytically determine the stability of these states in the space spanned by the current density and SyF interlayer exchange coupling. Numerical simulations confirm our analytical results.

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