27.03.2017
Departement Physik

Research


We do research nanoelectronics in the cryolab and with molecules.

Nanoelectronics in the cryolab

A cryostat
One of our cryostats.

In the cryolab we investigate electronic transport phenomena in nanometer scaled devices at cryogenic temperatures, typically in the range between 50 mK and 4 K. In order to obtain such low temperatures for macroscopic samples we are equipped with two dilution refrigerators, two 3He and one 4He cryostat, see picture gallery and the photo to the left. The small devices and low temperatures allow us to investigate new and exciting phenomena where individual electrons are manipulated and the classical description has to be replaced by quantum mechanics.
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Nanoelectronics with molecules

Break junction
Principle of a mechanically controllable break junction.

At the ultimate limit of control, nanometer scale devices should be fabricated with atomic precision. Reaching this level of precision is extremely challenging and in many cases impossible. Molecules however can be chemically synthesized with atomic precision and in large quantities. To some level, molecules or also self-assembled metallic and semiconducting clusters can be seen as the smallest building blocks where structure and electronic as well as electro-optical functions can be engineered. Instead of preparing solid-state devices by continuously reducing their size, we therefore combine here micro- and nano-fabrication techniques with chemical bonding and self-assembly to build molecular devices.
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