Novel quantum interference effects in transport through molecular radicals

Justin P. Bergfield*, Gemma C. Solomon, Charles A. Stafford, Mark A. Ratner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

64 Scopus citations


We investigate electronic transport through molecular radicals and predict a correlation-induced transmission node arising from destructive interference between transport contributions from different charge states of the molecule. This quantum interference effect has no single-particle analog and cannot be described by effective single-particle theories. Large errors in the thermoelectric properties and nonlinear current-voltage response of molecular radical junctions are introduced when the complementary wave and particle aspects of the electron are not properly treated. A method to accurately calculate the low-energy transport through a radical-based junction using an Anderson model is given.

Original languageEnglish (US)
Pages (from-to)2759-2764
Number of pages6
JournalNano letters
Issue number7
StatePublished - Jul 13 2011


  • DFT
  • Mott-node
  • Quantum transport
  • many-body
  • molecular radicals

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Mechanical Engineering
  • Bioengineering
  • General Materials Science


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