Dresden 2014 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 101: Transport - Poster Session

TT 101.15: Poster

Donnerstag, 3. April 2014, 15:00–19:00, P2

Intramolecular interference in an extended benzenelike molecule, due to a three-path analogy — Tim Ludwig and •Carsten Timm — TU Dresden, Dresden, Germany

In the last few years so-called intramolecular interference gained attention. It is the effect of interference in electronic transport through single molecules, leading to proposals for devices in molecular electronics and spintronics. Previous works have investigated spatially symmetric molecules or structures with two degenerate many-body states, analogous to a semiclassical two-path setup. We report on electronic-transport calculations within the quantum master-equation-formalism, investigating an extended Hubbard model of a six-sided ring with an additional central site, inspired by, e.g., benzene-vanadium. One can archieve a threefold-degenerate groundstate by tuning the parameters of the central site corresponding to a semiclassical three path setup.