Molecular origins of conduction channels observed in shot-noise measurements

Gemma C Solomon; Alessio Gagliardi; Alessandro Pecchia; Thomas Frauenheim; Aldo Di Carlo; Jeffrey R Reimers; Noel S Hush

doi:10.1021/nl0614516

Molecular origins of conduction channels observed in shot-noise measurements

Nano Lett. 2006 Nov;6(11):2431-7. doi: 10.1021/nl0614516.

Authors

Gemma C Solomon¹, Alessio Gagliardi, Alessandro Pecchia, Thomas Frauenheim, Aldo Di Carlo, Jeffrey R Reimers, Noel S Hush

Affiliation

¹ School of Chemistry, The University of Sydney, NSW 2006, Australia.

PMID: 17090069
DOI: 10.1021/nl0614516

Abstract

Measurements of shot noise from single molecules have indicated the presence of various conduction channels. We present three descriptions of these channels in molecular terms showing that the number of conduction channels is limited by bottlenecks in the molecule and that the channels can be linked to transmission through different junction states. We introduce molecular-conductance orbitals, which allow the transmission to be separated into contributions from individual orbitals and contributions from interference between pairs of orbitals.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Electric Conductivity*
Electrochemistry
Electrodes
Energy Transfer
Materials Testing / methods
Nanostructures / chemistry*
Sulfhydryl Compounds / chemistry*

Substances

1,4-benzenedithiol
Sulfhydryl Compounds