Controlling quantum transport through a single molecule.
We investigate multiterminal quantum transport through single monocyclic aromatic annulene molecules, and their derivatives, using the nonequilibrium Green function approach within the self-consistent Hartree-Fock approximation. We propose a new device concept, the quantum interference effect transistor, that exploits perfect destructive interference stemming from molecular symmetry and controls current flow by introducing decoherence and/or elastic scattering that break the symmetry. This approach overcomes the fundamental problems of power dissipation and environmental sensitivity that beset nanoscale device proposals.
Cardamone
David M
DM
Department of Physics, University of Arizona, 1118 E. 4th Street, Tucson, Arizona 85721, USA. David_Cardamone@sfu.ca
Stafford
Charles A
CA
Mazumdar
Sumit
S
D008958:Models, Molecular; D015394:Molecular Structure; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D011789:Quantum Theory
D011084:Polycyclic Aromatic Hydrocarbons