Magnetic States in Double Metal Ion Single-Molecule Junctions

我们进行单分子连接实验。我们的长期目标是了解和控制分子间的电荷传输。作为优先计划的第一步(头两年)，我们将重点放在方法改进上。在这个项目中，我们想要控制单分子结中的电荷态。我们将通过两种方法来实现这一目标：第一，我们将重新设计实验装置，以便可以使用静电门。其次，我们将设计和合成分子，它提供了一个明确的电荷状态，在两个终端的实验中可以通过有限的电压访问。我们期望由非对称偏置电压和栅极电压驱动的静电效应相互作用。启动参数必须通过选择合适的分子来仔细调整。我们更感兴趣的是电荷态的变化如何与分子几何结构的变化相关联的问题。

We perform single-molecule junction experiments. Our long-term goal is to understand and control charge transport across molecules. As a first step (first two years) within the priority program we will focus on methodological improvements. In this project we want to control charge states in single-molecule junctions. We will approach this goal by two means: First, we will redesign the experimental setup such that an electrostatic gate is available. Second, we will design and synthesize molecules, which provide a well-defined charge state, accessible by finite voltages in a two terminal experiment. We expect an interplay of electrostatic effects driven by asymmetric bias voltage, and by the gate voltage. The starting parameters have to be carefully tuned by a suitable choice of the molecule. We are further interested in the question how the variation of the charge state is associated with changes in the geometry of the molecule.