University Grenoble Alpes, CEA, CNRS, Grenoble INP, INAC, SPINTEC , F-38000 Grenoble, France.
Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany.
Nano Lett. 2017 Dec 13;17(12):7234-7241. doi: 10.1021/acs.nanolett.7b02458. Epub 2017 Nov 22.
The miniaturization of complementary metal-oxide-semiconductor (CMOS) devices becomes increasingly difficult due to fundamental limitations and the increase of leakage currents. Large research efforts are devoted to find alternative concepts that allow for a larger data-density and lower power consumption than conventional semiconductor approaches. Spin waves have been identified as a potential technology that can complement and outperform CMOS in complex logic applications, profiting from the fact that these waves enable wave computing on the nanoscale. The practical application of spin waves, however, requires the demonstration of scalable, CMOS compatible spin-wave detection schemes in material systems compatible with standard spintronics as well as semiconductor circuitry. Here, we report on the wave-vector independent detection of short-waved spin waves with wavelengths down to 150 nm by the inverse spin Hall effect in spin-wave waveguides made from ultrathin Ta/CoFeB/MgO. These findings open up the path for miniaturized scalable interconnects between spin waves and CMOS and the use of ultrathin films made from standard spintronic materials in magnonics.
由于基本限制和漏电流的增加，互补金属氧化物半导体（CMOS）器件的小型化变得越来越困难。人们投入了大量的研究努力来寻找替代概念，这些概念允许比传统半导体方法更大的数据密度和更低的功耗。自旋波已被确定为一种潜在的技术，它可以在复杂的逻辑应用中补充和超越 CMOS，其优势在于这些波能够在纳米尺度上实现波计算。然而，自旋波的实际应用需要在与标准自旋电子学以及半导体电路兼容的材料系统中证明可扩展的、与 CMOS 兼容的自旋波检测方案。在这里，我们报告了在由超薄 Ta/CoFeB/MgO 制成的自旋波导中通过反自旋霍尔效应实现的对短波长自旋波的波矢独立检测，这些自旋波的波长低至 150nm。这些发现为在自旋波和 CMOS 之间实现小型化可扩展互连以及在磁子学中使用标准自旋电子材料制成的超薄薄膜铺平了道路。
