• 文献标题:   Single-Molecule Junctions with Epitaxial Graphene Nanoelectrodes
  • 文献类型:   Article
  • 作  者:   ULLMANN K, COTO PB, LEITHERER S, MOLINAONTORIA A, MARTIN N, THOSS M, WEBER HB
  • 作者关键词:   epitaxial graphene nanoelectrode, electroburning, singlemolecule junction, fullerene end group, switching
  • 出版物名称:   NANO LETTERS
  • ISSN:   1530-6984 EI 1530-6992
  • 通讯作者地址:   Univ Erlangen Nurnberg
  • 被引频次:   46
  • DOI:   10.1021/acs.nanolett.5b00877
  • 出版年:   2015

▎ 摘  要

On the way to ultraflat single-molecule junctions with transparent electrodes, we present a fabrication scheme based on epitaxial graphene nanoelectrodes. As a suitable molecule, we identified a molecular wire with fullerene anchor groups. With these two components, stable electrical characteristics could be recorded, Electrical measurements show that single-molecule junctions with graphene and with gold electrodes display a striking agreement. This motivated a hypothesis that the differential Conductance spectra are rather insensitive to the electrode material. It is further corroborated by the assignment of asymmetries and spectral features to internal molecular,degrees of freedom. The demonstrated open access graphene electrodes and the electrode-insensitive, molecules provide a model system that will allow for a thorough investigation of an individual single,molecule contact with additional probes.