Field-free synthetic-ferromagnet spin torque oscillator

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

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number020409
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number2
DOIs
Publication statusPublished - 2013 Jan 29

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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