期刊
APPLIED PHYSICS LETTERS
卷 96, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3314282
关键词
antiferromagnetic materials; cobalt alloys; copper; excitons; iron alloys; manganese alloys; nanostructured materials; nickel alloys; platinum alloys; red shift; ruthenium; spin polarised transport
资金
- French National Grants [ANR-05- PNANO-044 MagICO, CARNOT-RF, OSEO ANVAR A0503013]
Spin polarized current induced self oscillations have been investigated in both the free layer and the synthetic antiferromagnetic (SAF) pinned layer of spin valve nanopillars. Compared with free layer excitations, the acoustic type SAF excitations are characterized by high emitted power and much narrower linewidth. Furthermore, in contrast to free layer excitations, the SAF in-plane precession mode exhibits an unexpected crossover from redshift (df/dI < 0) to blueshift (df/dI>0) in frequency f versus current I as the in-plane magnetic field is increased. From simulations we identify this crossover as a signature of large amplitude spin current induced precessional dynamics in the SAF.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据