Quantum-interference-controlled molecular electronics.

Journal Article

Quantum interference in coherent transport through single molecular rings may provide a mechanism to control the current in molecular electronics. We investigate its applicability, using a single-particle Green function method combined with ab initio electronic structure calculations. We find that the quantum interference effect (QIE) is strongly dependent on the interaction between molecular pi-states and contact sigma-states. It is masked by sigma tunneling in small molecular rings with Au leads, such as benzene, due to strong pi-sigma hybridization, while it is preserved in large rings, such as [18]annulene, which then could be used to realize quantum interference effect (QIE) transistors.

Full Text

Duke Authors

Cited Authors

  • Ke, S-H; Yang, W; Baranger, HU

Published Date

  • October 2008

Published In

Volume / Issue

  • 8 / 10

Start / End Page

  • 3257 - 3261

PubMed ID

  • 18803424

Pubmed Central ID

  • 18803424

Electronic International Standard Serial Number (EISSN)

  • 1530-6992

International Standard Serial Number (ISSN)

  • 1530-6992

Digital Object Identifier (DOI)

  • 10.1021/nl8016175


  • eng