Controlling the electronic transport through molecular systems (C02)

我们研究了单分子接触，其电子输运性质可以通过外部静电场、静磁场和电磁场来调节。我们研究了电流-电压特性、非弹性电子隧穿谱、热电势和散粒噪声。分子通过机械可调的金属和超导体电极单独接触。正在研究的分子包括光学可切换分子以及带有自由基的分子，其自旋可以在外部磁场中对齐。此外，我们将开发改进的分子和电极之间的接触计划，通过使用扩展的PI系统为基础的锚定基团。

We study single-molecule contacts the electronic transport properties of which can be tuned by external electrostatic, magnetostatic and electromagnetic fields. We study current-voltage characteristics, inelastic electron tunneling spec-troscopy, thermopower and also shot-noise. The molecules are contacted individually by mechanically tunable metal and superconductor electrodes. The molecules under study include optically switchable molecules as well as molecules bearing free radicals whose spins can be aligned in an external magnetic field. Additionally we will develop improved contacting schemes between molecules and electrodes by using extended Pi-system based anchoring groups.