Single crystal synthesis and low-lying electronic structure of V$_3$S$_4$

Yu-Jie Hao; Ming-Yuan Zhu; Xiao-Ming Ma; Chengcheng Zhang; Hongtao Rong; Qi Jiang; Yichen Yang; Zhicheng Jiang; Xiang-Rui Liu; Yupeng Zhu; Meng Zeng; Ruie Lu; Tianhao Shao; Xin Liu; Hu Xu; Zhengtai Liu; Mao Ye; Dawei Shen; Chaoyu Chen; Chang Liu

arXiv · 2208.04586

Single crystal synthesis and low-lying electronic structure of V$_3$S$_4$

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Abstract

We report successful growth of millimeter-sized high quality single crystals of V$_3$S$_4$, a candidate topological semimetal belonging to a low-symmetry space group and consisting of only low atomic number elements. Using density functional theory calculations and angle-resolved photoemission spectroscopy, we show that the nonmagnetic phase of monoclinic V$_3$S$_4$ hosts type-II Dirac-like quasiparticles which opens a sizable gap due to spin orbit coupling, as well as theoretical multiple nodal lines that are eliminated also by spin orbit coupling. These results suggest that relativistic effects give rise to profound modifications of the topological properties even in compounds with low-weight elements.

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Yu-Jie Hao, Ming-Yuan Zhu, Xiao-Ming Ma, Chengcheng Zhang, Hongtao Rong, Qi Jiang, Yichen Yang, Zhicheng Jiang, Xiang-Rui Liu, Yupeng Zhu, Meng Zeng, Ruie Lu, Tianhao Shao, Xin Liu, Hu Xu, Zhengtai Liu, Mao Ye, Dawei Shen, Chaoyu Chen, Chang Liu. 2022-08-09. Single crystal synthesis and low-lying electronic structure of V$_3$S$_4$. https://arxiv.org/abs/2208.04586

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