We systematically investigated the superstructure evolution of Te atoms on Au(111) substrate at different coverages. As revealed by low temperature scanning tunneling microscopy and spectroscopy, Te atoms form one-dimensional root3 R30{\deg} chains near 0.10 monolayer (ML). Two two-dimensional chiral structures, (root111*root111)R4.7{\deg} and (3root21*3root21)R10.9{\deg}, can be formed and their stability can be tuned by slightly adjusting the Te coverge near 1/3 ML. A honeycomb-like superstructure is observed by further increasing the coverage to 4/9 ML. An interfacial state emerges at ~-0.65 eV due to Te adsorption on Au(111). The formation of these Te-induced high-order superstructures is accompanied by relaxation of gold atoms in the surface layer, indicating the strong Te-Au interaction.
@article{arxiv.1705.01330,
title = {Superstructure evolution of tellurium atoms on Au(111) surface at different coverages},
author = {Jiaqi Guan and Xiaochun Huang and Shuyuan Zhang and Xun Jia and Xuetao Zhu and Weihua Wang and Jiandong Guo},
journal= {arXiv preprint arXiv:1705.01330},
year = {2024}
}