title: Single-molecule phenyl-acetylene-macrocycle-based optoelectronic switch functioning as a quantum-interference-effect transistor.
abstract: This work proposes a new type of optoelectronic switch, the phenyl-acetylene-macrocycle-based single-molecule transistor, which utilizes photon-assisted tunneling and destructive quantum interference. The analysis uses single-particle Green's functions along with Floquet theory. Without the optical field, phenyl-acetylene-macrocycle exhibits a wide range of strong antiresonance between its frontier orbitals. The simulations show large on-off ratios (over 10(4)) and measurable currents (~10(-11) A) enabled by photon-assisted tunneling in a weak optical field (~2 × 10(5) V/cm) and at a small source-drain voltage (~0.05 V). Field amplitude power scaling laws and a range of field intensities are given for operating one- and two-photon assisted tunneling in phenyl-acetylene-macrocycle-based single-molecule transistors. This development opens up a new direction for creating molecular switches.
authors.affiliation: Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: Liang-Yan
authors.initials: LY
authors.lastname: Hsu
authors.forename: Herschel
authors.initials: H
authors.lastname: Rabitz
mesh_terms: D000114:Acetylene / Q000031:analogs & derivatives* / Q000737:chemistry; D001555:Benzene Derivatives / Q000737:chemistry*; D047028:Macrocyclic Compounds / Q000737:chemistry*; D008962:Models, Theoretical; D049329:Nanostructures / Q000737:chemistry*; D011789:Quantum Theory; D012666:Semiconductors
chemical_list: D001555:Benzene Derivatives; D047028:Macrocyclic Compounds; D000114:Acetylene