...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >Angular dependence of the microwave-generation threshold in a nanoscale spin-torque oscillator
【24h】

Angular dependence of the microwave-generation threshold in a nanoscale spin-torque oscillator

机译：纳米自旋转矩振荡器中微波产生阈值的角度依赖性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

It is shown that in a spin-torque microwave oscillator based on a magnetic nanocontact, the nature of the microwave spin wave mode generated at the threshold critically depends on the angle between the external bias magnetic field and the plane of the free layer. When the external bias field is rotating from normal to in-plane orientation, an abrupt transition from a propagating cylindrical wave with the frequency higher than the frequency of the linear ferromagnetic resonance (FMR) to a self-localized standing nonlinear spin wave "bullet" with the frequency lower than the FMR frequency takes place at a certain intermediate angle θ_(cr) This transition manifests itself as an abrupt jump (of the order of several gigahertz) in the generated microwave frequency. This mechanism of mode switching might explain abrupt jumps of the generated microwave frequency observed in recent experiments on spin-torque oscillators.
机译：结果表明，在基于磁性纳米接触的自旋转矩微波振荡器中，在阈值处产生的微波自旋波模式的性质严格取决于外部偏置磁场与自由层平面之间的夹角。当外部偏置磁场从法向旋转到面内方向时，频率从高于线性铁磁共振（FMR）的传播圆柱波突然转变为自定位驻点非线性自旋波“子弹”频率低于FMR频率的频率发生在某个中间角θ_（cr）处。这种转变本身表现为所产生微波频率中的突然跳跃（几千兆赫量级）。这种模式切换机制可能解释了最近在自旋转矩振荡器上观察到的所产生微波频率的突变。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号