title: Novel quantum interference effects in transport through molecular radicals.
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.
authors.affiliation: Department of Chemistry, University of California, Irvine, California 92697, United States. jbergfie@uci.edu
authors.forename: Justin P
authors.initials: JP
authors.lastname: Bergfield
authors.forename: Gemma C
authors.initials: GC
authors.lastname: Solomon
authors.forename: Charles A
authors.initials: CA
authors.lastname: Stafford
authors.forename: Mark A
authors.initials: MA
authors.lastname: Ratner
mesh_terms: D004579:Electron Transport; D005609:Free Radicals / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D036103:Nanotechnology; D010316:Particle Size; D011789:Quantum Theory; D013499:Surface Properties; D014050:Toluene / Q000031:analogs & derivatives* / Q000737:chemistry
chemical_list: D005609:Free Radicals; D014050:Toluene; D006046:Gold; C004848:dithiol