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arXiv · 2308.12878

Two-dimensional germanium islands with Dirac signature on Ag2Ge surface alloy

Jiaqi Deng·Gulnigar Ablat·Yumu Yang·Xiaoshuai Fu·Qilong Wu·Ping Li·Li Zhang·Ali Safaei·Lijie Zhang·Zhihui Qin
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Abstract

Two-dimensional (2D) Dirac materials have attracted intense research efforts due to their promise for applications ranging from field-effect transistors and low-power electronics to fault-tolerant quantum computation. One key challenge is to fabricate 2D Dirac materials hosting Dirac electrons. Here, monolayer germanene is successfully fabricated on a Ag2Ge surface alloy. Scanning tunneling spectroscopy measurements revealed a linear energy dispersion relation. The latter was supported by density functional theory calculations. These results demonstrate that monolayer germanene can be realistically fabricated on a Ag2Ge surface alloy. The finding opens the door to exploration and study of 2D Dirac material physics and device applications.

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Jiaqi Deng, Gulnigar Ablat, Yumu Yang, Xiaoshuai Fu, Qilong Wu, Ping Li, Li Zhang, Ali Safaei, Lijie Zhang, Zhihui Qin. 2023-08-24. Two-dimensional germanium islands with Dirac signature on Ag2Ge surface alloy. https://doi.org/10.1088/1361-648x%2Fabe731

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