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Updated: Apr 21, 2026
Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
Published on: July 24, 2015
Quasi-2D Cu2 S crystals on graphene: in-situ growth and ab-initio calculations
Ferdaous Ben Romdhane1, Ovidiu Cretu, Lamjed Debbichi
1Institut de Physique et Chimie des Matériaux UMR 7504 CNRS, Université de Strasbourg, 23 rue du Loess, 67034, Strasbourg, France.
Abstract:
Two-dimensional crystals of beta-copper sulfide are synthesized in an in-situ electron microscopy experiment. Copper crystals are deposited on an amorphous carbon film containing sulfur. The carbon film graphitizes upon heating and electron irradiation and allows the reaction of Cu and S towards two-dimensional Cu(2) S crystals. These are energetically favourable and bonded via van der Waals interactions to the graphitic substrate.
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