Abstract
Utilizing rectangular graphene quantum dots with zigzag horizontal boundaries as a paradigm, we find that the conductance of the dots can exhibit significant oscillations with the position of the leads. The oscillation patterns are a result of quantum interference determined by the band structure of the underlying graphene nanoribbon. In particular, the power spectrum of the conductance variation concentrates on a selective set of bands of the ribbon. The computational results are substantiated by a heuristic theory that provides selection rules for the concentration on the specific dispersion bands. Copyright (C) EPLA, 2011
Original language | English |
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Article number | 58003 |
Number of pages | 4 |
Journal | Europhysics Letters |
Volume | 94 |
Issue number | 5 |
DOIs | |
Publication status | Published - Jun 2011 |