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Realization of a two-dimensional Weyl semimetal and topological Fermi strings

Physics

Realization of a two-dimensional Weyl semimetal and topological Fermi strings

Q. Lu, P. V. S. Reddy, et al.

Explore the groundbreaking study by Qiangsheng Lu and colleagues revealing the experimental realization of a two-dimensional Weyl semimetal through a bismuthene monolayer. This research directly observes spin-polarized Weyl cones and opens exciting pathways to study Weyl fermions in low-dimensional materials.

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Playback language: English
Abstract
This paper reports the experimental realization of a two-dimensional (2D) Weyl semimetal using a bismuthene monolayer grown on SnS(Se) substrates. Spin and angle-resolved photoemission and scanning tunneling spectroscopies directly observed spin-polarized Weyl cones, Weyl nodes, and Fermi strings, confirming the material's topological characteristics. This opens avenues for studying Weyl fermions in low-dimensional materials.
Publisher
Nature Communications
Published On
Jul 17, 2024
Authors
Qiangsheng Lu, P. V. Sreenivasa Reddy, Hoyeon Jeon, Alessandro R. Mazza, Matthew Brahlek, Weikang Wu, Shengyuan A. Yang, Jacob Cook, Clayton Conner, Xiaoqian Zhang, Amarnath Chakraborty, Yueh-Ting Yao, Hung-Ju Tien, Chun-Han Tseng, Po-Yuan Yang, Shang-Wei Lien, Hsin Lin, Tai-Chang Chiang, Giovanni Vignale, An-Ping Li, Tay-Rong Chang, Rob G. Moore, Guang Bian
Tags
Weyl semimetal
bismuthene
spin-polarized
topological characteristics
low-dimensional materials
Fermi strings
experimental realization

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