Abstract
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 Schrödinger 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.
Keywords
ConductancePoisson's equationElectrostaticsCurrent (fluid)Voltage dropMolecular wireNonlinear systemVoltagePhysicsCondensed matter physicsDrop (telecommunication)Charge (physics)Materials scienceElectrical engineeringQuantum mechanicsMoleculeThermodynamicsEngineering
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Publication Info
- Year
- 2000
- Type
- article
- Volume
- 112
- Issue
- 15
- Pages
- 6834-6839
- Citations
- 201
- Access
- Closed
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Cite This
Vladimiro Mújica,
Adrián E. Roitberg,
Mark A. Ratner
(2000).
Molecular wire conductance: Electrostatic potential spatial profile.
The Journal of Chemical Physics
, 112
(15)
, 6834-6839.
https://doi.org/10.1063/1.481258
Identifiers
- DOI
- 10.1063/1.481258