Spin-torque nano-emitters for magnonic applications
Spin-torque nano-emitters for magnonic applications
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DOI：
10.1063/1.4704563
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发表时间：
2012-04-16
影响因子：
4
通讯作者：
Urazhdin, S.
中科院分区：
文献类型：
--
作者：
Ulrichs, H.;Demidov, V. E.;Urazhdin, S.
在新兴的磁振子领域，自旋波被用作在纳米尺度上高速传输和处理电信号的介质。高性能磁子器件的实现需要高效的纳米级自旋波源。在这里，我们通过实验证明，这一目标可以通过利用一种改进的自旋扭矩器件设计来实现，其中内部偶极场在有源器件区域由内置的微磁铁补偿。实验表明，所提出的器件几何结构能够有效地发射大传播长度的自旋波，以用于集成磁子电路的实际实现。(C)2012年美国物理研究所。[http://dx.doi.org/10.1063/1.4704563]
In the emerging field of magnonics, spin waves are utilized as a medium for high-speed transmission and processing of electrical signals on the nanometer scale. The implementation of high-performance magnonic devices requires efficient nano-scaled sources of spin waves. Here, we demonstrate experimentally that this goal can be accomplished by utilizing a modified design of spin-torque devices, in which the internal dipolar field is compensated in the active device area by a built-in micromagnet. We show experimentally that the proposed device geometry enables efficient emission of spin waves with a large propagation length for practical implementation of integrated magnonic circuits. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4704563]