Switching in molecular transport junctions: Polarization response

Sina Yeganeh; Michael Galperin; Mark A. Ratner

doi:10.1021/ja0730967

Switching in molecular transport junctions: Polarization response

Sina Yeganeh, Michael Galperin, Mark A. Ratner^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

78 Scopus citations

Abstract

We discuss several proposed explanations for the switching and negative differential resistance (NDR) behavior seen in some molecular junctions. Several theoretical models are discussed, and we present results of electronic structure calculations on a series of substituted oligo(phenylene ethynylene) molecules. It is shown that a previously proposed polaron model is successful in predicting NDR behavior, and the model is elaborated with image charge effects and parameters from electronic structure calculations. This model now incorporates substituent effects and includes the effects of conformational change, charging, and image charge stabilization.

Original language	English (US)
Pages (from-to)	13313-13320
Number of pages	8
Journal	Journal of the American Chemical Society
Volume	129
Issue number	43
DOIs	https://doi.org/10.1021/ja0730967
State	Published - Oct 31 2007

ASJC Scopus subject areas

General Chemistry
Biochemistry
Catalysis
Colloid and Surface Chemistry

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AU - Ratner, Mark A.

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AB - We discuss several proposed explanations for the switching and negative differential resistance (NDR) behavior seen in some molecular junctions. Several theoretical models are discussed, and we present results of electronic structure calculations on a series of substituted oligo(phenylene ethynylene) molecules. It is shown that a previously proposed polaron model is successful in predicting NDR behavior, and the model is elaborated with image charge effects and parameters from electronic structure calculations. This model now incorporates substituent effects and includes the effects of conformational change, charging, and image charge stabilization.

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Switching in molecular transport junctions: Polarization response

Abstract

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