14 Citations (Scopus)

Abstract

Covalent tethering of single molecules between a gold surface and a gold nano-contact permits reliable measurement of the electronic properties of single molecules. Understanding of molecular electronics at the single molecule level should pave the way for understanding of more complex, multi-molecule devices. A single molecule study of n-alkanes shows that the electron decay rate, βN, is strongly affected by the nature of the connections to the molecule, βN being small and decreasing with applied bias. Mechanical (non-bonded) contacts result in βN increasing with bias, an outcome completely inconsistent with tunneling theory. The degree to which theory and experiment diverge even for such simple molecular electronic components is illustrated by the observation of contact charging in alkanethiol monolayers. We speculate that standard tunneling theory does not provide a full description of charge transport in even these simple molecules.

Original languageEnglish (US)
Pages (from-to)4867-4870
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number7 B
StatePublished - Jul 2002

Fingerprint

Electronic equipment
Molecules
electronics
molecules
Molecular electronics
molecular electronics
electron decay rate
Gold
tethering
gold
Electronic properties
Paraffins
alkanes
charging
Charge transfer
Monolayers
Electrons
Experiments

Keywords

  • Molecular electronics
  • Scanning probe microscopy
  • Tunneling

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

@article{eea2bd5e3f23471daa76f06d89a00511,
title = "Single molecule electronics and tunneling in molecules",
abstract = "Covalent tethering of single molecules between a gold surface and a gold nano-contact permits reliable measurement of the electronic properties of single molecules. Understanding of molecular electronics at the single molecule level should pave the way for understanding of more complex, multi-molecule devices. A single molecule study of n-alkanes shows that the electron decay rate, βN, is strongly affected by the nature of the connections to the molecule, βN being small and decreasing with applied bias. Mechanical (non-bonded) contacts result in βN increasing with bias, an outcome completely inconsistent with tunneling theory. The degree to which theory and experiment diverge even for such simple molecular electronic components is illustrated by the observation of contact charging in alkanethiol monolayers. We speculate that standard tunneling theory does not provide a full description of charge transport in even these simple molecules.",
keywords = "Molecular electronics, Scanning probe microscopy, Tunneling",
author = "Stuart Lindsay",
year = "2002",
month = "7",
language = "English (US)",
volume = "41",
pages = "4867--4870",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "Japan Society of Applied Physics",
number = "7 B",

}

TY - JOUR

T1 - Single molecule electronics and tunneling in molecules

AU - Lindsay, Stuart

PY - 2002/7

Y1 - 2002/7

N2 - Covalent tethering of single molecules between a gold surface and a gold nano-contact permits reliable measurement of the electronic properties of single molecules. Understanding of molecular electronics at the single molecule level should pave the way for understanding of more complex, multi-molecule devices. A single molecule study of n-alkanes shows that the electron decay rate, βN, is strongly affected by the nature of the connections to the molecule, βN being small and decreasing with applied bias. Mechanical (non-bonded) contacts result in βN increasing with bias, an outcome completely inconsistent with tunneling theory. The degree to which theory and experiment diverge even for such simple molecular electronic components is illustrated by the observation of contact charging in alkanethiol monolayers. We speculate that standard tunneling theory does not provide a full description of charge transport in even these simple molecules.

AB - Covalent tethering of single molecules between a gold surface and a gold nano-contact permits reliable measurement of the electronic properties of single molecules. Understanding of molecular electronics at the single molecule level should pave the way for understanding of more complex, multi-molecule devices. A single molecule study of n-alkanes shows that the electron decay rate, βN, is strongly affected by the nature of the connections to the molecule, βN being small and decreasing with applied bias. Mechanical (non-bonded) contacts result in βN increasing with bias, an outcome completely inconsistent with tunneling theory. The degree to which theory and experiment diverge even for such simple molecular electronic components is illustrated by the observation of contact charging in alkanethiol monolayers. We speculate that standard tunneling theory does not provide a full description of charge transport in even these simple molecules.

KW - Molecular electronics

KW - Scanning probe microscopy

KW - Tunneling

UR - http://www.scopus.com/inward/record.url?scp=0036657440&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036657440&partnerID=8YFLogxK

M3 - Article

VL - 41

SP - 4867

EP - 4870

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 7 B

ER -