...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >Three-magnon processes in magnetic nanoelements: Quantization and localized mode effects
【24h】

Three-magnon processes in magnetic nanoelements: Quantization and localized mode effects

机译：磁性纳米元素中的三磁子过程：量化和局部模式效应

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

Three-magnon effects are known to be important for nonlinear processes in magnetic thin films. In such a process, for example, the uniform mode at a frequency ω can decay into two modes at a lower frequency ω/2. In magnetic nanoelements, there are additional concerns which do not occur in films. First, in small elements, the excitation wave vectors become a set of discrete values. This limits the availability of final states. Second, localized modes are important in nanoelements. Our study is based on micromagnetic calculations using the Landau-Lifshitz equations. We use an oscillating magnetic field at frequency to to drive the system and to study the response over a wide range of frequencies and for a wide set of input powers. In nanoelements, the typical response occurs not exactly at ω/2 but for several frequencies which are symmetrically spaced around ω/2. This is explained by the two considerations introduced above. We study the response both as a function of the amplitude of the driving field and as a function of the driving frequency. In this way, we can study the system response both at resonance and outside of resonance.
机译：已知三磁振效应对于磁性薄膜的非线性过程很重要。在这样的过程中，例如，频率为ω的均匀模式可衰减为频率为ω/ 2的两个模式。在磁性纳米元素中，存在薄膜中不存在的其他问题。首先，在小元件中，激发波矢量成为一组离散值。这限制了最终状态的可用性。其次，局部模式在纳米元素中很重要。我们的研究基于使用Landau-Lifshitz方程进行的微磁计算。我们使用频率上的振荡磁场来驱动系统，并研究在很宽的频率范围内以及对于广泛的输入功率的响应。在纳米元素中，典型的响应不完全在ω/ 2处发生，而是针对在ω/ 2附近对称间隔的几个频率。上面介绍的两个注意事项对此进行了解释。我们研究响应既是驱动场振幅的函数，也是驱动频率的函数。这样，我们可以研究共振时和共振外的系统响应。

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