Magnonics: Spin Waves on the Nanoscale
Magnonics: Spin Waves on the Nanoscale
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DOI：
10.1002/adma.200900809
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发表时间：
2009-07-07
影响因子：
29.4
通讯作者：
Grundler, Dirk
中科院分区：
文献类型：
--
作者：
Neusser, Sebastian;Grundler, Dirk
磁性纳米结构长期以来一直是磁存储行业研究的热点。对于数据存储来说，磁态的非易失性至关重要。随着信息技术产生对越来越高的数据传输速率的需求，研究工作已转向了解磁化动力学。在这里，自旋波及其类似粒子的磁振子越来越引起人们的兴趣。高质量纳米图案磁性介质现在提供了在不移动电荷的情况下传输和处理信息的新方法。这一新功能是通过自旋波实现的。它们受到新颖的功能原理的限制，这使得它们特别适合在纳米尺度上运行。磁子晶体有望提供对自旋波的完全控制，类似于光子晶体对光的作用。与非易失性相结合，可能会形成多功能超材料。我们报告了磁振子学这个快速发展的研究领域的最新进展。
Magnetic nanostructures have long been in the focus of intense research in the magnetic storage industry. For data storage the nonvolatility of magnetic states is of utmost relevance. As information technology generates the need for higher and higher data-transfer rates, research efforts have moved to understand magnetization dynamics. Here, spin waves and their particle-like analog, magnons, are increasingly attracting interest. High-quality nanopatterned magnetic media now offer new ways to transmit and process information without moving electrical charges. This new functionality is enabled by spin waves. They are confined by novel functioning principles, which render them especially suitable to operate at the nanoscale. Magnonic crystals are expected to provide full control of spin waves, similarly to what photonic crystals already do for light. Combined with nonvolatility, multifunctional metamaterials might be formed. We report recent advances in this rapidly increasing research field called magnonics.