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 af dette arbejde

Kemisk Institut

8 Citationer (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.

Originalsprog	Engelsk
Tidsskrift	Nano Letters
Vol/bind	8
Udgave nummer	10
Sider (fra-til)	3525-3531
Antal sider	7
ISSN	1530-6984
DOI	https://doi.org/10.1021/nl801001q
Status	Udgivet - 1 okt. 2008

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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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U2 - 10.1021/nl801001q

DO - 10.1021/nl801001q

M3 - Journal article

C2 - 18808190

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Cotunneling model for current-induced events in molecular wires

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