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Abstract: The coherent electron transport along zigzag and metallic armchair graphenenanoribbons in the presence of one or two vacancies is investigated. Having inmind atomic scale tunability of the conductance fingerprints, the primary focusis on the effect of the distance to the edges and inter vacancies spacing. Aninvolved interplay of vacancies sublattice location and nanoribbon edgetermination, together with the spacing parameters lead to a wide conductanceresonance line shape modification. Turning on a magnetic field introduces a newlength scale that unveils counter-intuitive aspects of the interplay betweenpurely geometric aspects of the system and the underlying atomic scale natureof graphene.



Autor: D. A. Bahamon, A. L. C. Pereira, P. A. Schulz

Fuente: https://arxiv.org/







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