Electronic Shells of Dirac Fermions in Graphene Quantum Rings in a Magnetic Field

• Authors: P. Potasz , A. Güçlü , P. Hawrylak
• Languages of publication: EN

Abstracts

EN

We present results of tight binding calculations demonstrating existence of degenerate electronic shells of Dirac fermions in narrow, charge neutral graphene quantum rings. We predict removal of degeneracy with finite magnetic field. We show, using a combination of tight binding and configuration interaction methods, that by filling a graphene ring with additional electrons this carbon based structure with half-filled shell acquires a finite magnetic moment.

Keywords

EN

73.22.-f; 81.07.Ta

Discipline

• 73.22.-f: Electronic structure of nanoscale materials and related systems
• 81.07.Ta: Quantum dots

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 5
• Pages: 832-834

Dates

published

2009-11

Contributors

author

P. Potasz

• Institute for Microstructural Sciences, National Research Council of Canada, Ottawa, Canada
• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

A. Güçlü

• Institute for Microstructural Sciences, National Research Council of Canada, Ottawa, Canada

author

P. Hawrylak

• Institute for Microstructural Sciences, National Research Council of Canada, Ottawa, Canada

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Identifiers

DOI

10.12693/APhysPolA.116.832