Rousseau O, Rana B, Anami R, Yamada M, Miura K, Ogawa S, Otani Y
Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako 351-0198, Japan.
1] Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako 351-0198, Japan [2] Frontier Research Academy for Young Researchers, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka 820-8502, Japan.
Sci Rep. 2015 May 15;5:9873. doi: 10.1038/srep09873.
The recent development of spin dynamics opens perspectives for various applications based on spin waves, including logic devices. The first important step in the realization of spin-wave-based logics is the manipulation of spin-wave interference. Here, we present the experimental realization of a micrometre-scale spin-wave interferometer consisting of two parallel spin-wave waveguides. The spin waves propagate through the waveguides and the superposition or interference of the electrical signals corresponding to the spin waves is measured. A direct current flowing through a metal wire underneath one of the spin-wave waveguides affects the propagation properties of the corresponding spin wave. The signal of constructive or destructive interference depends on the magnitude and direction of the applied direct current. Thus, the present work demonstrates a unique manipulation of spin-wave interference.
自旋动力学的最新进展为基于自旋波的各种应用（包括逻辑器件）开辟了前景。实现基于自旋波的逻辑的第一个重要步骤是对自旋波干涉的操控。在此，我们展示了由两个平行自旋波波导组成的微米级自旋波干涉仪的实验实现。自旋波在波导中传播，并测量与自旋波对应的电信号的叠加或干涉。流经其中一个自旋波波导下方金属线的直流电流会影响相应自旋波的传播特性。相长或相消干涉的信号取决于所施加直流电流的大小和方向。因此，本工作展示了对自旋波干涉的独特操控。
