The Role of the Charge State of Surface Atoms of a Metal Substrate in Doping of Quasi-Free-Standing Graphene
Journal Article
·
· Technical Physics Letters
- Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)
- ITMO University (Russian Federation)
To determine the effect of a metal substrate on the electronic state of quasi-free-standing graphene, a simple model taking into account the presence of the double electric layer on the metal surface is proposed. The arising electrostatic field shifts the Dirac point of graphene, which leads to its doping. An analytical expression for the charge of graphene atoms is obtained. Numerical estimations are made for (111) faces of Cu, Ag, Au, and Pt. The agreement of the obtained estimations with the available results of numerical calculations is discussed.
- OSTI ID:
- 22927853
- Journal Information:
- Technical Physics Letters, Journal Name: Technical Physics Letters Journal Issue: 12 Vol. 44; ISSN 1063-7850
- Country of Publication:
- United States
- Language:
- English
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