Non-Local Conductance Modulation by Molecules: STM of Substituted Styrene Heterostructures on H-Terminated Si(100)

Abstract

One-dimensional organic heterostructures consisting of contiguous lines of CF3- and OCH3-substituted styrene molecules on silicon are studied by scanning tunneling microscopy and ab initio simulation. Dipole fields of OCH3-styrene molecules are found to enhance conduction through molecules near OCH3-styrene/CF3-styrene heterojunctions. Those of CF3-styrene depress transport through the nearby silicon. Thus choice of substituents and their attachment site on host molecules provide a means of differentially tuning molecule and substrate transport at the molecular scale.

4 pages, 4 figures. To be published in Physical Review Letters

References in corpus (2)

• Long-range repulsive interaction between TTF molecules on a metal surface induced by charge transfer
• Linear Chains of Styrene and Methyl-Styrene Molecules and their Heterojunctions on Silicon: Theory and Experiment

Cited by in corpus (11)

• Dirac point resonances due to atoms and molecules adsorbed on graphene and transport gaps and conductance quantization in graphene nanoribbons with covalently bonded adsorbates
• Valley currents and non-local resistances of graphene nanostructures with broken inversion symmetry from the perspective of scattering theory
• Identification of the Molecule-Metal Bonding Geometries of Molecular Nanowires
• Tight Binding Model of Mn12 Single Molecule Magnets: Electronic and Magnetic Structure and Transport Properties
• Mechanism of the enhanced conductance of a molecular junction under tensile stress
• Ligand-based transport resonances of single-molecule magnet spin filters: Suppression of the Coulomb blockade and determination of the orientation of the magnetic easy axis
• Identification of the Atomic Scale Structures of the Gold-Thiol Interfaces of Molecular Nanowires by Inelastic Tunneling Spectroscopy
• Controlling the thermoelectric effect by mechanical manipulation of the electron's quantum phase in atomic junctions
• Inelastic Tunneling Spectroscopy of Gold-Thiol and Gold-Thiolate Interfaces in Molecular Junctions: The Role of Hydrogen
• Thermoelectric voltage switching in gold atomic wire junctions
• Mechanisms of jump to contact and conductance plateau formation in copper atomic junctions in vacuum and aqueous environments