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    Rights statement: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © 2017American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acsnano.7b00570

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Distinguishing Lead and Molecule States in Graphene-Based Single-Electron Transistors

Research output: Contribution to journalJournal article

Published
  • Pascal Gehring
  • Jakub K. Sowa
  • Jonathan Cremers
  • Qingqing Wu
  • Hatef Sadeghi
  • Yuewen Sheng
  • Jamie H. Warner
  • Colin J. Lambert
  • G. Andrew D. Briggs
  • Jan A. Mol
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<mark>Journal publication date</mark>27/06/2017
<mark>Journal</mark>ACS Nano
Issue number6
Volume11
Number of pages7
Pages (from-to)5325-5331
Publication statusPublished
Early online date19/04/17
Original languageEnglish

Abstract

Graphene provides a two-dimensional platform for contacting individual molecules, which enables transport spectroscopy of molecular orbital, spin, and vibrational states. Here we report single-electron tunneling through a molecule that has been anchored to two graphene leads. Quantum interference within the graphene leads gives rise to an energy-dependent transmission and fluctuations in the sequential tunnel-rates. The lead states are electrostatically tuned by a global back-gate, resulting in a distinct pattern of varying intensity in the measured conductance maps. This pattern could potentially obscure transport features that are intrinsic to the molecule under investigation. Using ensemble averaged magneto-conductance measurements, lead and molecule states are disentangled, enabling spectroscopic investigation of the single molecule.

Bibliographic note

This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © 2017American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acsnano.7b00570