Molecular wire conductance: Electrostatic potential spatial profile
Molecular wire conductance: Electrostatic potential spatial profile
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DOI：
10.1063/1.481258
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发表时间：
2000-04
影响因子：
4.4
通讯作者：
V. Mujica;A. Roitberg;M. Ratner
中科院分区：
文献类型：
--
作者：
V. Mujica;A. Roitberg;M. Ratner
通过自洽求解Poisson方程和Schrodinger方程，研究了静电势对一维紧束缚分子线上电流的影响。结果表明，在非线性区域，静电效应对电流的影响是非常重要的。它们通过界面区域中的电压降的强烈变化来表现自己，与在导线中不存在电荷时预期的线性斜坡相比，并且还表现在电流-电压特性的性质中。
We have studied the effect of the electrostatic potential on the current across a one-dimensional tight-binding molecular wire by solving self-consistently the Poisson and Schrodinger equations. The results indicate that electrostatic effects on the current are very important in the nonlinear regime. They manifest themselves through a strong variation of the voltage drop in the interfacial region compared to the linear ramp expected in the absence of charge in the wire and also in the nature of the current–voltage characteristics.