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Two Phases of Monolayer Tantalum Sulfide on Au(111)
Daniela Dombrowski1,2, Abdus Samad3, Clifford Murray4
1Institut für Materialphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany.
ACS Nano
|July 23, 2021
Abstract:
We prepared monolayers of tantalum sulfide on Au(111) by evaporation of Ta in a reactive background of H2S. Under sulfur-rich conditions, monolayers of 2H-TaS2 formed, whereas under sulfur-poor conditions TaS2- with 0 ≤ x ≤ 1 were found. We identified this phase as TaS, a structure that can be derived from 2H-TaS2 by removal of the bottom S layer.
Keywords:
2d materialsangle-resolved photoemission spectroscopydensity functional theorymonolayer transition-metal chalcogenidescanning tunneling microscopy/spectroscopysynthesis
