Broad-wave-vector spin pumping of flat-band magnons

• DOI: 10.1103/physrevapplied.21.044024
• Publication Date: 2024-04-12T15:02:43Z
• Authors: Jinlong Wang; Hanchen Wang; Jilei Chen; William Legrand; Peng Chen; Lutong Sheng; Jihao Xia; Guibin Lan; Yuelin Zhang; Rundong Yuan; Jing Dong; Xiufeng Han; Jean-Philippe Ans...; Haiming Yu
• Keywords: Spin wave; Magnon; Spin pumping; Spin Current

Spin pumping can generate spin current by driving a magnetic system into resonance, phenomenon that be electrically detected via the inverse Hall effect. However, efficiency of generation has remained limited, compared to spin-to-charge conversion. This work systematically demonstrates an innovative technique for probing propagating waves and creating with high efficiency, mediated flat-band magnons excited broad wave vectors. These findings lay promising foundation further experiments waves.