Talmelli Giacomo, Devolder Thibaut, Träger Nick, Förster Johannes, Wintz Sebastian, Weigand Markus, Stoll Hermann, Heyns Marc, Schütz Gisela, Radu Iuliana P, Gräfe Joachim, Ciubotaru Florin, Adelmann Christoph
Imec, 3001 Leuven, Belgium.
KU Leuven, Departement Materiaalkunde, SIEM, 3001 Leuven, Belgium.
Sci Adv. 2020 Dec 18;6(51). doi: 10.1126/sciadv.abb4042. Print 2020 Dec.
Spin waves are excitations in ferromagnetic media that have been proposed as information carriers in hybrid spintronic devices with much lower operation power than conventional charge-based electronics. Their wave nature can be exploited in majority gates by using interference for computation. However, a scalable spin-wave majority gate that can be cointegrated alongside conventional electronics is still lacking. Here, we demonstrate a submicrometer inline spin-wave majority gate with fan-out. Time-resolved imaging of the magnetization dynamics by scanning transmission x-ray microscopy illustrates the device operation. All-electrical spin-wave spectroscopy further demonstrates majority gates with submicrometer dimensions, reconfigurable input and output ports, and frequency-division multiplexing. Challenges for hybrid spintronic computing systems based on spin-wave majority gates are discussed.
自旋波是铁磁介质中的激发态，在混合自旋电子器件中被提议作为信息载体，其运行功率比传统的基于电荷的电子器件低得多。利用它们的波动特性，可通过干涉在多数逻辑门中进行计算。然而，目前仍缺乏一种能够与传统电子器件共同集成的可扩展自旋波多数逻辑门。在此，我们展示了一种具有扇出功能的亚微米级串联自旋波多数逻辑门。通过扫描透射X射线显微镜对磁化动力学进行时间分辨成像，说明了该器件的工作情况。全电自旋波光谱进一步证明了具有亚微米尺寸、可重新配置的输入和输出端口以及频分复用的多数逻辑门。文中还讨论了基于自旋波多数逻辑门的混合自旋电子计算系统所面临的挑战。
