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  • 1509.02851

    Rights statement: This is the author’s version of a work that was accepted for publication in Physica E. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Physica E, 82, 2016 DOI: 10.1016/j.physe.2015.09.005

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Hexagonal-boron nitride substrates for electroburnt graphene nanojunctions

Research output: Contribution to journalJournal article

Published
<mark>Journal publication date</mark>08/2016
<mark>Journal</mark>Physica E: Low-dimensional Systems and Nanostructures
Volume82
Number of pages4
Pages (from-to)12-15
Publication statusPublished
Early online date18/09/15
Original languageEnglish

Abstract

We examine the effect of a hexagonal boron nitride (hBN) substrate on electron transport through graphene nanojunctions just before gap formation. Junctions in vacuum and on hBN are formed using classical molecular dynamics to create initial structures, followed by relaxation using density functional theory. We find that the hBN only slightly reduces the current through the junctions at low biases. Furthermore due to quantum interference at the last moments of breaking, the current though a single carbon filament spanning the gap is found to be higher than the current through two filaments spanning the gap in parallel. This feature is present both in the presence of absence of hBN.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Physica E. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Physica E, 82, 2016 DOI: 10.1016/j.physe.2015.09.005