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Graphene Quantum Dots, Graphene Non-circular n–p–n-Junctions: Quasi-relativistic Pseudo Wave and Potentials

  • H. V. Grushevskaya
  • G. G. Krylov
  • S. P. Kruchinin
  • B. Vlahovic
Conference paper
Part of the NATO Science for Peace and Security Series A: Chemistry and Biology book series (NAPSA)

Abstract

In our work, we build an atomic-like GQD-model and look for a GQD pseudopotential barrier, which is given by a set of well pseudopotentials for individual carbon atoms of the GQD. Numerical modelling of large-size GQDs has been performed in hydrodynamic approximation. It has been shown that pseudopotential removes degeneracy of energy levels for GQD-supercell and localizes valent electrons of the GQD-model on holes of n–p–n graphene-junction. Non-spherical symmetry of GQD wave functions leads to lifting of spin and valley degeneracy.

Keywords

Graphene quantum dots Graphene non-circular n–p–n-junctions GQD-model GQD pseudopotential barrier 

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  • H. V. Grushevskaya
    • 1
  • G. G. Krylov
    • 1
  • S. P. Kruchinin
    • 2
  • B. Vlahovic
    • 3
  1. 1.Physics DepartmentBelarusian State UniversityMinskBelarus
  2. 2.Bogolyubov Institute for Theoretical PhysicsKievUkraine
  3. 3.North Carolina Central UniversityDurhamUSA

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