Asymmetry in negative differential resistance driven by electron-electron interactions in two-site molecular devices

J. E. Han; Vincent Henry Crespi

doi:10.1063/1.1413499

Asymmetry in negative differential resistance driven by electron-electron interactions in two-site molecular devices

J. E. Han, Vincent Henry Crespi

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19 Scopus citations

Abstract

We demonstrate that Coulomb interactions within the Hartree-Fock approximation can induce a strong asymmetry in the negative differential resistance of a two-site resonant molecular device. This sharp cutoff at high voltage is generic and independent of the detailed single-particle electronic structure of the system. The intersite coupling between distinct molecular subunits controls a transition from staircase to resonant current-voltage characteristics. These studies clarify the relationship between weak screening and strong nonlinearity.

Original language	English (US)
Pages (from-to)	2829-2831
Number of pages	3
Journal	Applied Physics Letters
Volume	79
Issue number	17
DOIs	https://doi.org/10.1063/1.1413499
State	Published - Oct 22 2001

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.1413499

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abstract = "We demonstrate that Coulomb interactions within the Hartree-Fock approximation can induce a strong asymmetry in the negative differential resistance of a two-site resonant molecular device. This sharp cutoff at high voltage is generic and independent of the detailed single-particle electronic structure of the system. The intersite coupling between distinct molecular subunits controls a transition from staircase to resonant current-voltage characteristics. These studies clarify the relationship between weak screening and strong nonlinearity.",

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N2 - We demonstrate that Coulomb interactions within the Hartree-Fock approximation can induce a strong asymmetry in the negative differential resistance of a two-site resonant molecular device. This sharp cutoff at high voltage is generic and independent of the detailed single-particle electronic structure of the system. The intersite coupling between distinct molecular subunits controls a transition from staircase to resonant current-voltage characteristics. These studies clarify the relationship between weak screening and strong nonlinearity.

AB - We demonstrate that Coulomb interactions within the Hartree-Fock approximation can induce a strong asymmetry in the negative differential resistance of a two-site resonant molecular device. This sharp cutoff at high voltage is generic and independent of the detailed single-particle electronic structure of the system. The intersite coupling between distinct molecular subunits controls a transition from staircase to resonant current-voltage characteristics. These studies clarify the relationship between weak screening and strong nonlinearity.

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Asymmetry in negative differential resistance driven by electron-electron interactions in two-site molecular devices

Abstract

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