Jamali Mahdi, Kwon Jae Hyun, Seo Soo-Man, Lee Kyung-Jin, Yang Hyunsoo
Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117576, Singapore.
Sci Rep. 2013 Nov 7;3:3160. doi: 10.1038/srep03160.
The utilization of spin waves as eigenmodes of the magnetization dynamics for information processing and communication has been widely explored recently due to its high operational speed with low power consumption and possible applications for quantum computations. Previous proposals of spin wave Mach-Zehnder devices were based on the spin wave phase, a delicate entity which can be easily disrupted. Here, we propose a complete logic system based on the spin wave amplitude utilizing the nonreciprocal spin wave behavior excited by microstrip antennas. The experimental data reveal that the nonreciprocity of magnetostatic surface spin wave can be tuned by the bias magnetic field. Furthermore, engineering of the device structure could result in a high nonreciprocity factor for spin wave logic applications.
由于其具有低功耗下的高运行速度以及在量子计算中的潜在应用，自旋波作为用于信息处理和通信的磁化动力学本征模的利用近来已得到广泛探索。先前关于自旋波马赫曾德尔器件的提议是基于自旋波相位的，而自旋波相位是一个很容易被破坏的微妙实体。在此，我们提出一种基于自旋波幅度的完整逻辑系统，该系统利用微带天线激发的非互易自旋波行为。实验数据表明，静磁表面自旋波的非互易性可通过偏置磁场进行调节。此外，器件结构的工程设计可导致用于自旋波逻辑应用的高非互易因子。
