Quantum dots in graphene

We suggest a way of confining quasiparticles by an external potential in a small region of a graphene strip. Transversal electron motion plays a crucial role in this confinement. Properties of thus obtained graphene quantum dots are investigated theoretically for different types of the boundary cond...

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Bibliographic Details
Published in:Physical review letters 2007-01, Vol.98 (1), p.016802-016802, Article 016802
Main Authors: Silvestrov, P G, Efetov, K B
Format: Article
Language:English
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Summary:We suggest a way of confining quasiparticles by an external potential in a small region of a graphene strip. Transversal electron motion plays a crucial role in this confinement. Properties of thus obtained graphene quantum dots are investigated theoretically for different types of the boundary conditions at the edges of the strip. The (quasi)bound states exist in all systems considered. At the same time, the dependence of the conductance on the gate voltage carries information about the shape of the edges.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.98.016802