Novel quantum interference effects in transport through molecular radicals

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

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

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
Pages (from-to)2759-2764
Number of pages6
JournalNano Letters
Volume11
Issue number7
DOIs
Publication statusPublished - Jul 13 2011

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interference
Molecules
Electrons
Electric potential
particle theory
analogs
electric potential
electronics
molecules
electrons
energy

Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Novel quantum interference effects in transport through molecular radicals. / Bergfield, Justin P.; Solomon, Gemma C.; Stafford, Charles A.; Ratner, Mark A.

In: Nano Letters, Vol. 11, No. 7, 13.07.2011, p. 2759-2764.

Research output: Contribution to journalArticle

Bergfield, Justin P. ; Solomon, Gemma C. ; Stafford, Charles A. ; Ratner, Mark A. / Novel quantum interference effects in transport through molecular radicals. In: Nano Letters. 2011 ; Vol. 11, No. 7. pp. 2759-2764.
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