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We systematically investigated the superstructure evolution of Te atoms onAu(111) substrate at different coverages. As revealed by low temperaturescanning tunneling microscopy and spectroscopy, Te atoms form one-dimensionalroot3 R30{\deg} chains near 0.10 monolayer (ML). Two two-dimensional chiralstructures, (root111*root111)R4.7{\deg} and (3root21*3root21)R10.9{\deg}, canbe formed and their stability can be tuned by slightly adjusting the Te covergenear 1/3 ML. A honeycomb-like superstructure is observed by further increasingthe coverage to 4/9 ML. An interfacial state emerges at ~-0.65 eV due to Teadsorption on Au(111). The formation of these Te-induced high-ordersuperstructures is accompanied by relaxation of gold atoms in the surfacelayer, indicating the strong Te-Au interaction.

Superstructure evolution of tellurium atoms on Au(111) surface at different coverages