Molecular electronics: Some views on transport junctions and beyond

Christian Joachim, Mark A Ratner

Research output: Contribution to journalArticle

380 Citations (Scopus)

Abstract

The field of molecular electronics comprises a fundamental set of issues concerning the electronic response of molecules as parts of a mesoscopic structure and a technology-facing area of science. We will overview some important aspects of these subfields. The most advanced ideas in the field involve the use of molecules as individual logic or memory units and are broadly based on using the quantum state space of the molecule. Current work in molecular electronics usually addresses molecular junction transport, where the molecule acts as a barrier for incoming electrons: This is the fundamental Landauer idea of "conduction as scattering" generalized to molecular junction structures. Another point of view in terms of superexchange as a guiding mechanism for coherent electron transfer through the molecular bridge is discussed. Molecules generally exhibit relatively strong vibronic coupling. The last section of this overview focuses on vibronic effects, including inelastic electron tunneling spectroscopy, hysteresis in junction charge transport, and negative differential resistance in molecular transport junctions.

Original languageEnglish
Pages (from-to)8801-8808
Number of pages8
JournalProceedings of the National Academy of Sciences of the United States of America
Volume102
Issue number25
DOIs
Publication statusPublished - Jun 21 2005

Fingerprint

Electrons
Molecular Structure
Spectrum Analysis
Technology
Transfer (Psychology)

ASJC Scopus subject areas

  • Genetics
  • General

Cite this

Molecular electronics : Some views on transport junctions and beyond. / Joachim, Christian; Ratner, Mark A.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 102, No. 25, 21.06.2005, p. 8801-8808.

Research output: Contribution to journalArticle

@article{4270bd6f7ead4264a40eb5d04ebe305f,
title = "Molecular electronics: Some views on transport junctions and beyond",
abstract = "The field of molecular electronics comprises a fundamental set of issues concerning the electronic response of molecules as parts of a mesoscopic structure and a technology-facing area of science. We will overview some important aspects of these subfields. The most advanced ideas in the field involve the use of molecules as individual logic or memory units and are broadly based on using the quantum state space of the molecule. Current work in molecular electronics usually addresses molecular junction transport, where the molecule acts as a barrier for incoming electrons: This is the fundamental Landauer idea of {"}conduction as scattering{"} generalized to molecular junction structures. Another point of view in terms of superexchange as a guiding mechanism for coherent electron transfer through the molecular bridge is discussed. Molecules generally exhibit relatively strong vibronic coupling. The last section of this overview focuses on vibronic effects, including inelastic electron tunneling spectroscopy, hysteresis in junction charge transport, and negative differential resistance in molecular transport junctions.",
author = "Christian Joachim and Ratner, {Mark A}",
year = "2005",
month = "6",
day = "21",
doi = "10.1073/pnas.0500075102",
language = "English",
volume = "102",
pages = "8801--8808",
journal = "Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
number = "25",

}

TY - JOUR

T1 - Molecular electronics

T2 - Some views on transport junctions and beyond

AU - Joachim, Christian

AU - Ratner, Mark A

PY - 2005/6/21

Y1 - 2005/6/21

N2 - The field of molecular electronics comprises a fundamental set of issues concerning the electronic response of molecules as parts of a mesoscopic structure and a technology-facing area of science. We will overview some important aspects of these subfields. The most advanced ideas in the field involve the use of molecules as individual logic or memory units and are broadly based on using the quantum state space of the molecule. Current work in molecular electronics usually addresses molecular junction transport, where the molecule acts as a barrier for incoming electrons: This is the fundamental Landauer idea of "conduction as scattering" generalized to molecular junction structures. Another point of view in terms of superexchange as a guiding mechanism for coherent electron transfer through the molecular bridge is discussed. Molecules generally exhibit relatively strong vibronic coupling. The last section of this overview focuses on vibronic effects, including inelastic electron tunneling spectroscopy, hysteresis in junction charge transport, and negative differential resistance in molecular transport junctions.

AB - The field of molecular electronics comprises a fundamental set of issues concerning the electronic response of molecules as parts of a mesoscopic structure and a technology-facing area of science. We will overview some important aspects of these subfields. The most advanced ideas in the field involve the use of molecules as individual logic or memory units and are broadly based on using the quantum state space of the molecule. Current work in molecular electronics usually addresses molecular junction transport, where the molecule acts as a barrier for incoming electrons: This is the fundamental Landauer idea of "conduction as scattering" generalized to molecular junction structures. Another point of view in terms of superexchange as a guiding mechanism for coherent electron transfer through the molecular bridge is discussed. Molecules generally exhibit relatively strong vibronic coupling. The last section of this overview focuses on vibronic effects, including inelastic electron tunneling spectroscopy, hysteresis in junction charge transport, and negative differential resistance in molecular transport junctions.

UR - http://www.scopus.com/inward/record.url?scp=21144453304&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=21144453304&partnerID=8YFLogxK

U2 - 10.1073/pnas.0500075102

DO - 10.1073/pnas.0500075102

M3 - Article

C2 - 15956192

AN - SCOPUS:21144453304

VL - 102

SP - 8801

EP - 8808

JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

SN - 0027-8424

IS - 25

ER -