Molecular wire conductance: Electrostatic potential spatial profile

Vladimiro Mujica*, Adrian E. Roitberg, Mark Ratner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

197 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)6834-6839
Number of pages6
JournalJournal of Chemical Physics
Issue number15
StatePublished - Apr 15 2000

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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