Two Phases of Monolayer Tantalum Sulfide on Au(111)
Daniela Dombrowski, Abdus Samad, Clifford Murray, Marin Petrović, Pascal R. Ewen, Thomas Michely, Marko Kralj, Udo Schwingenschlögl, Carsten Busse
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–x 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.
Topics & Concepts
MonolayerTantalumMaterials scienceSulfideNanotechnologyCrystallographyChemistryMetallurgyGraphene research and applications2D Materials and ApplicationsTopological Materials and Phenomena