Coulomb Interaction in Graphene Systems

In this work we investigate the ground state energy of a hydrogen like impurity states in doped monolayer and bilayer graphene systems with opened energy gap. We suggest a method based on a variational approach in the momentum space for the Coulomb problem in graphene systems. The binding energy of...

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Bibliographic Details
Published in:Physics of particles and nuclei 2023-12, Vol.54 (6), p.997-1001
Main Authors: Avetisyan, A. A., Djotyan, A. P.
Format: Article
Language:English
Subjects:
Particle and Nuclear Physics
Physics
Physics and Astronomy
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Summary:In this work we investigate the ground state energy of a hydrogen like impurity states in doped monolayer and bilayer graphene systems with opened energy gap. We suggest a method based on a variational approach in the momentum space for the Coulomb problem in graphene systems. The binding energy of an impurity electron in monolayer and bilayer graphene is studied by this method taking into account the screening effects of Coulomb potential. It is shown that the binding energy of hydrogen like impurity is tunable by the gate voltage and tight binding parameters in the region of few ten meV.
ISSN:1063-7796
1531-8559
DOI:10.1134/S1063779623060059