Switching speed distribution of spin-torque-induced magnetic reversal

J. He, J. Z. Sun, Shufeng Zhang

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The switching probability of a single-domain ferromagnet under spin-current excitation is evaluated using the Fokker-Planck equation (FPE). In the case of uniaxial anisotropy, the FPE reduces to an ordinary differential equation in which the lowest eigenvalue λ1 determines the slowest switching events. We have calculated λ1 using both analytical and numerical methods. It is found that the previous model based on thermally distributed initial magnetization states [J. Z. Sun, Proc. SPIE 5359, 445 (2004)] can be accurately justified in some useful limiting conditions.

Original languageEnglish (US)
Article number09A501
JournalJournal of Applied Physics
Volume101
Issue number9
DOIs
StatePublished - 2007
Externally publishedYes

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Fokker-Planck equation
torque
sun
differential equations
eigenvalues
magnetization
anisotropy
excitation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Switching speed distribution of spin-torque-induced magnetic reversal. / He, J.; Sun, J. Z.; Zhang, Shufeng.

In: Journal of Applied Physics, Vol. 101, No. 9, 09A501, 2007.

Research output: Contribution to journalArticle

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