2026-10-14T00:52:14Z https://www.scidb.cn/oai

10.57760/sciencedb.02391 2022-08-29T09:46:06Z

2022-08-29 Nanoscale Valley Modulation by Surface Plasmon Interference doi:10.57760/sciencedb.02391 en Exploiting excitons in 2-dimensional (2D) materials has attracted the attention of the community to develop improved photoelectronic devices. Previous reports are based on direct excitation where the out-of-plane illumination projects a uniform single-mode light spot. However, because of the optical diffraction limit, the minimal spot size is a few micrometers, inhibiting the precise manipulation and control of excitons at the nanoscale level. Herein, we introduced the in-plane coherent surface plasmonic interference (SPI) field to excite and modulate excitons remotely. Compared to the out-of-plane light, a uniform in-plane SPI suggests a more compact spatial volume and an abundance of mode selections for a single or an array of device modulation. Our results not only build up a fundamental platform for operating and encoding the exciton states at the nanoscale level but also provide a new avenue toward all-optical integrated valleytronic chips for future quantum computation and information applications. surface plasmon interference; valleytronic; near-field optics Huan-Li Zhou Xiao-Yang Zhang Xiao-Mei Xue Yi Yang Shan-Jiang Wang Dan Su Zong-Ru Yang Yun-Fan Wang Yun-Jun Song Jing-Yuan Wu Weiping Wu Tong Zhang PUBLIC https://creativecommons.org/licenses/by-nc/4.0/ dataset Science Data Bank