Cotunneling model for current-induced events in molecular wires

Thorsten Hansen; Vladimiro Mujica; Mark A. Ratner

doi:10.1021/nl801001q

Cotunneling model for current-induced events in molecular wires

Thorsten Hansen^*, Vladimiro Mujica, Mark A. Ratner

^*Corresponding author for this work

Department of Chemistry

8 Citations (Scopus)

Abstract

Many phenomena in molecular transport junctions involve transitions between electronic states of the molecular wire, and, therefore, cannot be described adequately using the Landauer picture. We present a model for cotunneling processes in molecular wires. These are coherent second-order processes that can be observed at low temperatures. As an example, we consider the STM-induced dissociation of acetylene. The large voltage threshold for dissociation observed experimentally is naturally accounted for within the cotunneling model.

Original language	English
Journal	Nano Letters
Volume	8
Issue number	10
Pages (from-to)	3525-3531
Number of pages	7
ISSN	1530-6984
DOIs	https://doi.org/10.1021/nl801001q
Publication status	Published - 1 Oct 2008

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10.1021/nl801001q

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title = "Cotunneling model for current-induced events in molecular wires",

abstract = "Many phenomena in molecular transport junctions involve transitions between electronic states of the molecular wire, and, therefore, cannot be described adequately using the Landauer picture. We present a model for cotunneling processes in molecular wires. These are coherent second-order processes that can be observed at low temperatures. As an example, we consider the STM-induced dissociation of acetylene. The large voltage threshold for dissociation observed experimentally is naturally accounted for within the cotunneling model.",

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AU - Mujica, Vladimiro

AU - Ratner, Mark A.

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N2 - Many phenomena in molecular transport junctions involve transitions between electronic states of the molecular wire, and, therefore, cannot be described adequately using the Landauer picture. We present a model for cotunneling processes in molecular wires. These are coherent second-order processes that can be observed at low temperatures. As an example, we consider the STM-induced dissociation of acetylene. The large voltage threshold for dissociation observed experimentally is naturally accounted for within the cotunneling model.

AB - Many phenomena in molecular transport junctions involve transitions between electronic states of the molecular wire, and, therefore, cannot be described adequately using the Landauer picture. We present a model for cotunneling processes in molecular wires. These are coherent second-order processes that can be observed at low temperatures. As an example, we consider the STM-induced dissociation of acetylene. The large voltage threshold for dissociation observed experimentally is naturally accounted for within the cotunneling model.

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Cotunneling model for current-induced events in molecular wires

Abstract

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