Critical current density for spin transfer torque switching with composite free layer structure
Materials Science
2010-06-09 v1 Other Condensed Matter
Abstract
Critical current density of composite free layer (CFL) in magnetic tunneling junction is investigated. CFL consists of two exchange coupled ferromagnetic layers, where the coupling is parallel or anti-parallel. Instability condition of the CFL under the spin transfer torque, which is related with critical current density, is obtained by analytic spin wave excitation model and confirmed by macro-spin Landau-Lifshitz-Gilbert equation. The critical current densities for the coupled two identical layers are investigated with various coupling strengths, and spin transfer torque efficiencies.
Keywords
Cite
@article{arxiv.0909.2711,
title = {Critical current density for spin transfer torque switching with composite free layer structure},
author = {Chun-Yeol You},
journal= {arXiv preprint arXiv:0909.2711},
year = {2010}
}
Comments
13 pages with 5 figures