Current-voltage characteristics of tunneling molecular junctions for off-resonance injection

被引：56

作者：

Mujica, V ^{[1
]}

Ratner, MA ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

CHEMICAL PHYSICS | 2001年 / 264卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0301-0104(00)00394-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An analytical expression is obtained for the I-V curves for a tight-binding model of a molecule-metal junction for off-resonance injection. The derivation takes into account a self-consistent determination of the voltage that leads to a spatial pattern where the voltage drop occurs at the molecule-wire interface. The relevance of this model for electron transfer reactions and molecular conductance is assessed. It leads to a striking power law dependence of the current on the voltage, while preserving the exponential length dependence of either the conductance or the reaction rate. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：365 / 370

页数：6

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