Spin-Current-Controlled Modulation of the Magnon Spin Conductance in a Three-Terminal Magnon Transistor
Spin-Current-Controlled Modulation of the Magnon Spin Conductance in a Three-Terminal Magnon Transistor
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DOI：
10.1103/physrevlett.120.097702
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发表时间：
2018-03-02
影响因子：
8.6
通讯作者：
Duine, R. A.
中科院分区：
文献类型：
--
作者：
Cornelissen, L. J.;Liu, J.;Duine, R. A.
有效地控制磁振子自旋输运对于开发基于磁振子的自旋电子器件至关重要。在这篇论文中，我们提供了一种调制热磁振子在注入器和检测器接点之间的钇铁石榴石通道中的扩散输运方法的原理证明。通过第三调制器电极注入磁振子来增加或减少磁振子的化学势，从而改变通道的磁振子自旋电导。在T = 250 K时，我们获得了1.6%/ mA的调制效率。有限元模型表明，通过减小通道的厚度，这可以增加到远高于10%/ mA，为基于热磁振子的逻辑电路的发展提供了有趣的前景。
Efficient manipulation of magnon spin transport is crucial for developing magnon-based spintronic devices. In this Letter, we provide proof of principle of a method for modulating the diffusive transport of thermal magnons in an yttrium iron garnet channel between injector and detector contacts. The magnon spin conductance of the channel is altered by increasing or decreasing the magnon chemical potential via spin Hall injection of magnons by a third modulator electrode. We obtain a modulation efficiency of 1.6%/ mA at T = 250 K. Finite element modeling shows that this could be increased to well above 10%/ mA by reducing the thickness of the channel, providing interesting prospects for the development of thermal-magnon-based logic circuits.