Multigap nodeless superconductivity in the Dirac intermetallic alloy V 2 Ga 5 with one-dimensional vanadium chains

作者：Chunqiang Xu, Chenhe Zhao, Yuxia Shen, Danilo Ratkovski, Xuekai Ma, Wei Zhou, Xunqing Yin, Bin Li, A. F. Bangura, Chao Cao, Baomin Wang, Ziming Zhu, Xianglin Ke, Dong Qian, Shiyan Li, Xiaofeng Xu · 发表于：Physical review. B./Physical review. B · 年份：2024 · DOI：10.1103/physrevb.109.l100506 · 被引用次数：5 · 研究领域：Topological Materials and Phenomena、Graphene research and applications、Rare-earth and actinide compounds

A vast landscape of topological phases of matter with emergent quasiparticles has been explored in the past two decades, but the majority of them are 2D or 3D in essence and far fewer 1D counterparts are known to exist. Here, first-principles calculations reveal a multitude of topological fermions near the Fermi level in the quasi-one-dimensional alloy V${}_{2}$Ga${}_{5}$, which becomes a multigap nodeless superconductor below 3.6 K, raising the possibility of realizing topological superconductivity in this quasi-1D system.